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Showing posts with label Submarine. Show all posts
Showing posts with label Submarine. Show all posts

Tuesday, May 15, 2018

The Turtle

Here are some images of Mir's 1/35 scale Turtle from the American revolutionary war.
Upon opening this kit I was quite surprised and a little disappointed as to how small the kit was.
That and the small number of parts, so what to do.
First I completely scratched out a new top made totally out of brass. Then I added a barrel to replace the simple box that came with the kit. I then added the chain and rings.
The display base was made from wooden ship spare parts I had.
It's a very small model but pretty.

From Wikipedia"
Turtle (also called American Turtle) was the world's first submersible vessel with a documented record of use in combat. It was built in 1775 by American David Bushnell as a means of attaching explosive charges to ships in a harbor, for use against British Royal Navy vessels occupying North American harbors during the American Revolutionary War. Connecticut Governor Jonathan Trumbull recommended the invention to George Washington, who provided funds and support for the development and testing of the machine.
Several attempts were made using Turtle to affix explosives to the undersides of British warships in New York Harbor in 1776. All failed, and her transport ship was sunk later that year by the British with the submarine aboard. Bushnell claimed eventually to have recovered the machine, but its final fate is unknown. Modern replicas of Turtle have been constructed and are on display in the Connecticut River Museum, the U.S. Navy's Submarine Force Library and Museum, the Royal Navy Submarine Museum, and the Oceanographic Museum (Monaco).

The American inventor David Bushnell conceived of the idea of a submersible for use in lifting the British naval blockade during the American War of Independence. Bushnell may have begun studying underwater explosions while at Yale College. By early 1775, he had created a reliable method for detonating underwater explosives, a clockwork connected to a musket firing mechanism, probably a flintlock, adapted for the purpose.
After the Battles of Lexington and Concord in April 1775, Bushnell began work near Old Saybrook on a small, individually-manned submersible designed to attach an explosive charge to the hull of an enemy ship, which, he wrote Benjamin Franklin, would be, “Constructed with Great Simplicity and upon Principles of Natural Philosophy.”
Little is known about the origin, inspiration, and influences for Bushnell’s invention. It seems clear Bushnell knew of the work of the Dutch inventor Cornelius Drebbel.
According to Dr. Benjamin Gale, a doctor who taught at Yale, the many brass and mechanical (moving) parts of the submarine were built by the New Haven clock-maker, engraver, silversmith, brass manufacturer and inventor Isaac Doolittle, whose shop was just a half block from Yale. Though Bushnell is given the overall design credit for the Turtle by Gale and others, Doolittle was well known as an "ingenious mechanic" (i.e. an engineer), engraver, and metalworker. He had both designed and manufactured complicated brass-wheel hall-clocks, a mahogany printing-press in 1769 (the first made in America, after Doolittle successfully duplicated the iron screw), brass compasses, and surveying instruments. He also founded and owned a brass foundry where he cast bells. At the start of the American Revolution, the wealthy and patriotic Doolittle built a gunpowder mill with two partners in New Haven to support the war, and was sent by the Connecticut government to prospect for lead.
Though the design of the Turtle was necessarily shrouded in secrecy, based on his mechanical engineering expertise and previous experience in design and manufacturing, it seems Doolittle designed and crafted (and probably funded) the brass and the moving parts of the Turtle, including the propulsion system, the navigation instruments, the brass foot operated water-ballast and forcing pumps, the depth gauge and compass, the brass crown hatch, the clockwork detonator for the mine, and the hand operated propeller crank and foot-driven treadle with flywheel. According to a letter from Benjamin Gale to Benjamin Franklin, Doolittle also designed the mine attachment mechanism, "those Parts which Conveys the Powder, and secures the same to the Bottom of the Ship". The most historically important innovation in the Turtle was the propeller, as it was the first known use of one in a watercraft: it was described as an "oar for rowing forward or backward", with "no precedent" design. As it was probably brass, it was thus likely forged if not designed by Doolittle. Doolittle also likely provided the scarce commodities of gunpowder and lead ballast as well. The wealthy Doolittle, nearly 20 years older than the Yale student Bushnell, was a founder and long time Warden of Trinity Episcopal Church on the Green,, and was in charge of New Haven's port inspection and beacon-alarm systems – suggesting that Doolittle provided much of the political and financial leadership in building the Turtle as well as its brass and moving parts.
In making the hull, Bushnell enlisted the services of several skilled artisans, including his brother the farmer Ezra Bushnell and ship's carpenter Phineas Pratt, both, like David Bushnell, from Saybrook.. The hull was “constructed of oak, somewhat like a barrel and bound by heavy wrought-iron hoops.” The shape of the hull, Gale informed Silas Deane, “has the nearest resemblance to the two upper shells of a Tortoise joined together.”
This 19th-century diagram shows the side views of Turtle. It incorrectly depicts the propeller as a screw blade; as seen in the replica photographed above and reported by Sergeant Lee, it was a paddle propeller blade.
Named for its shape, Turtle resembled a large clam as much as a turtle; it was about 10 feet (3.0 m) long (according to the original specifications), 6 feet (1.8 m) tall, and about 3 feet (0.9 m) wide, and consisted of two wooden shells covered with tar and reinforced with steel bands. It dived by allowing water into a bilge tank at the bottom of the vessel and ascended by pushing water out through a hand pump. It was propelled vertically and horizontally by hand-cranked propellers. It also had 200 pounds (91 kg) of lead aboard, which could be released in a moment to increase buoyancy. Manned and operated by one person, the vessel contained enough air for about thirty minutes and had a speed in calm water of about 3 mph (2.6 kn; 4.8 km/h).
A diagram showing the front and rear of Turtle
Six small pieces of thick glass in the top of the submarine provided natural light. The internal instruments had small pieces of bioluminescent foxfire affixed to the needles to indicate their position in the dark. During trials in November 1775, Bushnell discovered that this illumination failed when the temperature dropped too low. Although repeated requests were made to Benjamin Franklin for possible alternatives, none was forthcoming, and Turtle was sidelined for the winter.
Bushnell's basic design included some elements present in earlier experimental submersibles. The method of raising and lowering the vessel was similar to that developed by Nathaniel Simons in 1729, and the gaskets used to make watertight connections around the connections between the internal and external controls also may have come from Simons, who constructed a submersible based on a 17th-century Italian design by Giovanni Alfonso Borelli.

Thursday, May 3, 2018

CSS H.L. Hunley

Here are some images of Mir's 1/35 scale CSS H.L. Hunley Civil War submarine.

From Wikipedia"
H. L. Hunley, often referred to as Hunley, was a submarine of the Confederate States of America that played a small part in the American Civil War. Hunley demonstrated the advantages and the dangers of undersea warfare. She was the first combat submarine to sink a warship (USS Housatonic), although Hunley was not completely submerged and, following her successful attack, was lost along with her crew before she could return to base. The Confederacy lost 21 crewmen in three sinkings of Hunley during her short career. She was named for her inventor, Horace Lawson Hunley, shortly after she was taken into government service under the control of the Confederate States Army at Charleston, South Carolina.
Hunley, nearly 40 feet (12 m) long, was built at Mobile, Alabama, and launched in July 1863. She was then shipped by rail on August 12, 1863, to Charleston. Hunley (then referred to as the "fish boat", the "fish torpedo boat", or the "porpoise") sank on August 29, 1863, during a test run, killing five members of her crew. She sank again on October 15, 1863, killing all eight of her second crew, including Horace Hunley himself, who was aboard at the time, even though he was not a member of the Confederate military. Both times Hunley was raised and returned to service.
On February 17, 1864, Hunley attacked and sank the 1,240-displacement ton United States Navy screw sloop-of-war USS Housatonic, which had been on Union blockade-duty in Charleston's outer harbor. The Hunley did not survive the attack and also sank, taking with her all eight members of her third crew, and was lost.
Finally located in 1995, Hunley was raised in 2000 and is on display in North Charleston, South Carolina, at the Warren Lasch Conservation Center on the Cooper River. Examination, in 2012, of recovered Hunley artifacts suggests that the submarine was as close as 20 feet (6 meters) to her target, Housatonic, when her deployed torpedo exploded, which caused the submarine's own loss.

Construction of the Hunley began soon after the loss of the American Diver. At this stage, the Hunley was variously referred to as the "fish boat", the "fish torpedo boat", or the "porpoise". Legend held that the Hunley was made from a cast-off steam boiler — perhaps because a cutaway drawing by William Alexander, who had seen her, showed a short and stubby machine. In fact, the Hunley was designed and built for her role, and the sleek, modern-looking craft shown in R.G. Skerrett's 1902 drawing is an accurate representation. The Hunley was designed for a crew of eight, seven to turn the hand-cranked propeller and one to steer and direct the boat. Each end was equipped with ballast tanks that could be flooded by valves or pumped dry by hand pumps. Extra ballast was added through the use of iron weights bolted to the underside of the hull. In the event the submarine needed additional buoyancy to rise in an emergency, the iron weight could be removed by unscrewing the heads of the bolts from inside the vessel.
The Hunley was equipped with two watertight hatches, one forward and one aft, atop two short conning towers equipped with small portholes and slender, triangular cutwaters. The hatches, bigger than original estimates, measure about 16.5 inches wide and nearly 21 long (42 by 53 centimeters), making entrance to and egress from the hull difficult. The height of the ship's hull was 4 feet 3 inches (1.30 m).
By July 1863, the Hunley was ready for a demonstration. Supervised by Confederate Admiral Franklin Buchanan, the Hunley successfully attacked a coal flatboat in Mobile Bay. Following this, the submarine was shipped by rail to Charleston, South Carolina, arriving on August 12, 1863.
However, the Confederate military seized the submarine from her private builders and owners shortly after arriving, turning her over to the Confederate Army. The Hunley would operate as a Confederate Army vessel from then on, although Horace Hunley and his partners would remain involved in her further testing and operation. While sometimes referred to as the CSS Hunley, she was never officially commissioned into service.
Confederate Navy Lieutenant John A. Payne of CSS Chicora volunteered to be Hunley's captain, and seven men from Chicora and CSS Palmetto State volunteered to operate her. On August 29, 1863, The Hunley's new crew was preparing to make a test dive, when Lieutenant Payne accidentally stepped on the lever controlling the sub's diving planes as she was running on the surface. This caused the Hunley to dive with her hatches still open. Payne and two others escaped, but the other five crewmen drowned.
The Confederate Army took control of the Hunley, with all orders coming directly from General P. G. T. Beauregard, with Lt. George E. Dixon placed in charge. On October 15, 1863, the Hunley failed to surface after a mock attack, killing all eight crewmen. Among these was Hunley himself, who had joined the crew for the exercise and possibly had taken over command from Dixon for the attack maneuver. The Confederate Navy once more salvaged the submarine and returned her to service.

The Hunley was originally intended to attack by using a floating explosive charge with a contact fuse (a torpedo in 19th century terminology) which was towed at the end of a long rope. The Hunley was to approach an enemy ship on the surface, then dive under her, and surface again once beyond her. The torpedo would be drawn against the targeted ship and explode. This plan was discarded as dangerous because of the possibility of the tow line fouling the Hunley's screw or drifting into the submarine herself.
Instead, a spar torpedo -- a copper cylinder containing 135 pounds (61 kilograms) of black powder -- was attached to a 22-foot (6.7 m)-long wooden spar, as seen in illustrations made at this time. Mounted on the Hunley's bow, the spar was to be used when the submarine was 6 feet (1.8 m) or more below the surface. Previous spar torpedoes had been designed with a barbed point: the spar torpedo would be jammed in the target's side by ramming, and then detonated by a mechanical trigger attached to the submarine by a line, so that as she backed away from her target, the torpedo would set off. However, archaeologists working on Hunley discovered evidence, including a spool of copper wire and components of a battery, that it may actually have been electrically detonated. In the configuration used in the attack on the Housatonic, it appears the Hunley's torpedo had no barbs, and was designed to explode on contact as it was pushed against an enemy vessel at close range. After Horace Hunley's death, General Beauregard ordered that the submarine should no longer be used to attack underwater. An iron pipe was then attached to her bow, angled downwards so the explosive charge would be delivered sufficiently under water to make it effective. This was the same method developed for the earlier "David" surface attack craft used successfully against the USS New Ironsides. The Confederate Veteran of 1902 printed a reminiscence authored by an engineer stationed at Battery Marshall who, with another engineer, made adjustments to the iron pipe mechanism before the Hunley left on her last fatal mission on February 17, 1864. A drawing of the iron pipe spar, confirming her "David" type configuration, was published in early histories of submarine warfare.

The Hunley made her only attack against an enemy target on the night of February 17, 1864. The target was the USS Housatonic, a 1,240 long tons (1,260 t) wooden-hulled steam-powered sloop-of-war with 12 large cannons, which was stationed at the entrance to Charleston, about 5 miles (8.0 kilometres) offshore. Desperate to break the naval blockade of the city, Lieutenant George E. Dixon and a crew of seven volunteers successfully attacked the Housatonic, ramming the Hunley's only spar torpedo against the enemy's hull. The torpedo was detonated, sending the Housatonic to the bottom in five minutes, along with five of her crewmen.
Years later, when the area around the wreck of the Housatonic was surveyed, the sunken Hunley was found on the seaward side of the sloop, where no one had considered looking before. This later indicated that the ocean current was going out following the attack on the Housatonic, taking the Hunley with her to where she was eventually found and later recovered.

After the attack, the H.L. Hunley failed to return to her base. At one point there appeared to be evidence that Hunley survived as long as one hour following the attack at about 8:45 p.m. The day after the attack, the commander of "Battery Marshall" reported that he had received "the signals" from the submarine indicating she was returning to her base. The report did not say what the signals were. A postwar correspondent wrote that "two blue lights" were the prearranged signals, and a lookout on the Housatonic reported he saw a "blue light" on the water after his ship sank."Blue light" in 1864 referred to a pyrotechnic signal in long use by the U.S. Navy. It has been falsely represented in published works as a blue lantern; the lantern eventually found on the recovered H.L. Hunley had a clear, not a blue, lens. Pyrotechnic "blue light" could be seen easily over the four-mile distance between Battery Marshall and the site of the Hunley's attack on the Housatonic.
After signaling, Dixon's plan would have been to take his submarine underwater to make a return to Sullivan's Island. Although at one point the finders of the Hunley suggested she was unintentionally rammed by USS Canandaigua when that warship was going to rescue the crew of Housatonic, no such damage was found when she was raised from the bottom of the harbor. Instead, all evidence and analysis eventually pointed to the instantaneous death of the Hunley's entire crew at the moment of the spar torpedo's contact with the hull of the Housatonic from the explosion's shock wave which destroyed their lungs and brain tissue in milliseconds. In October 2008, scientists reported they had found that the crew of Hunley had not set her pump to remove water from the crew's compartment, and this might indicate she was not being flooded. In January 2013, it was announced that conservator Paul Mardikian had found evidence of a copper sleeve at the end of the Hunley's spar. This indicated the torpedo had been attached directly to the spar, meaning the submarine may have been less than 20 feet from Housatonic when the torpedo exploded. The short distance involved has led some researchers to theorize that Hunley's crew was killed by the resulting blast, though their conclusion has been disputed by US Navy and Naval History and Heritage Command researchers.

Tuesday, October 24, 2017

USOS Seaview

Here are some images of Moebius Models 1/128 scale USOS Seaview from the 1960's television series "Voyage to the Bottom of the Sea".

From Wikipedia"
Seaview, a fictional privately owned nuclear submarine, was the setting for the 1961 motion picture Voyage to the Bottom of the Sea, starring Walter Pidgeon,and later for the 1964–1968 ABC television series of the same title.

The accomplishments of America's nuclear-powered submarines were major news items in the years before the film Voyage to the Bottom of the Sea was released. Voyage to the Bottom of the Sea was the third American science fiction film to feature such ships. The first two were It Came from Beneath the Sea (1955) and The Atomic Submarine (1960).
The submarine USS Nautilus, commissioned in 1954, was the first nuclear-powered ship of any kind. In August 1958, she steamed under the Arctic ice cap to make the first crossing from the Pacific to the Atlantic via the North Pole. On 3 August 1958 she became the first ship to reach the North Pole.
On 17 March 1959, the nuclear submarine USS Skate became the first submarine to surface at the North Pole. While at the Pole, her crew scattered the ashes of Arctic explorer Sir Hubert Wilkins.
The film Voyage to the Bottom of the Sea begins with Seaview in the Arctic on the final phase of her sea trials, which include a dive under the Arctic ice cap.
USS George Washington was commissioned on 20 December 1959 as America's first nuclear-powered ballistic missile submarine (SSBN). On 20 June 1960, she made the first two submerged launches of the Polaris missile. She got underway on the first deterrent patrol on 15 November 1960.[
In the film, Seaview fires a ballistic missile with a nuclear warhead to extinguish the "skyfire."
Two milestones in underwater exploration were achieved in 1960, the year before the film Voyage to the Bottom of the Sea was released.
From February 16, 1960 to May 10, 1960, the submarine USS Triton made the first submerged circumnavigation of the world. Triton observed and photographed Guam extensively through her periscope during this mission, without being detected by the U.S. Navy on Guam.
In the film, Seaview's voyage to the firing point follows much of the same track that Triton took on her circumnavigation: south through the Atlantic Ocean, around Cape Horn, and then northwest across the Pacific Ocean to the firing point near Guam. Seaview's bow and stern are radically different from Triton's, but Seaview's long, slim hull resembles the hull of Triton.
On January 23, 1960, Jacques Piccard and Lieutenant Don Walsh (USN), in the bathyscaphe Trieste, made the first descent to the bottom of the Challenger Deep. The Challenger Deep is the deepest surveyed spot in the world's oceans, and is located in the Mariana Trench, southwest of Guam.
In the film, Seaview is attacked by another submarine as she approaches the firing point. Admiral Nelson advises Captain Crane to dive into the Mariana Trench to escape, claiming Seaview is the only submarine that can survive the pressure of the trench. The attacking sub is crushed by the pressure when it follows Seaview into the trench.

For the motion picture version, scientist Admiral Harriman Nelson (USN-Ret) (Walter Pidgeon) was the designer/builder of the Seaview, operated under the auspices of the Bureau of Marine Exploration, United States Dept. of Science (per art director Herman Blumenthal).
In the context of the television series, the Seaview was one of several experimental submarines designed by Admiral Nelson (Richard Basehart), Director of the Nelson Institute of Marine Research, a top-secret government complex located in Santa Barbara, California, in the then-future years between 1973 and 1983. Seaview had two sister ships depicted in the television series, the Neptune (a variant of the same class as the Seaview destroyed late in the first season), and the virtually identical Angler (featured in the episode The Enemies). The Polidor, which was a prototype attack sub, was destroyed in the third episode of the series.
Seaview was prefixed "USOS" only in the 1961 film. The prefix "USOS" is spoken in a news report about the ship during the first minutes of the film, and when the ship's radio operator tries calling Washington, D.C. In Theodore Sturgeon's novelization of the film, "USOS" stood for United States Oceanographic Survey.
In the television series, the name Seaview was usually prefixed "S.S.R.N." (see below). Later writings explained that "SSRN" stood for Nuclear Submarine (SSN), Research (R) or SSRN, and was referred to by Admiral Nelson in at least one episode as "S.S.N.R. Seaview." However, in the pilot episode, "Eleven Days to Zero" (see below), Seaview's new commanding officer opens sealed orders addressed to "Commander Lee B. Crane, U.S.S. Seaview".
In the United States Navy, the hull classification symbol "SSRN" (without periods) would indicate a nuclear-powered radar picket submarine. Seaview was nuclear-powered, but no indication was ever given that she was equipped for radar picket missions. The hull classification symbol of a U.S. Navy ship is never written with periods after the letters. For example, the hull number of USS Triton (the only nuclear-powered radar picket submarine ever built for the United States Navy) is always written "SSRN-586", never "S.S.R.N.-586."
In the motion picture, Lee Crane (portrayed by Robert Sterling; originally the role was intended for David Hedison, who turned it down yet later accepted the same role for the television series) was the only Captain of the Seaview from its launch as "Nelson's Folly", as Congressman Llewellyn Parker (Howard McNear) described it. In the series, the first Captain of the Seaview was Commander John Phillips (portrayed by William Hudson). He was killed in "Eleven Days To Zero", which was the pilot episode of the series. Commander Lee Crane (David Hedison), on loan from the United States Navy, was picked to replace him. (Crane's rank was Commander, but he was usually addressed as "Captain" because he was the Commanding Officer of the ship.) Other crew included Executive Officer Lieutenant Commander Chip Morton (Robert Dowdell), Chief "Curley" Jones (Henry Kulky) (first season) and Chief Sharkey (Terry Becker) (Season 2, 3 and 4). Crewman Kowalkski was played by Del Monroe, who played a similar character, "Kowski" in the feature film.

Seaview’s hull was designed to withstand a depth of 3600 feet (1 km), and in one episode survived a depth excursion approaching 5000 feet (1.5 km). The transparent-hull "window-section" bow of Seaview was not rounded like a traditional submarine but was faired into a pair of manta winglike, stationary bow planes (in addition to her more conventional sail planes). This was added after the original B 29 -like front with twelve pairs of windows on two levels was modified for "Freudian anatomically analogous issues." In exterior shots, Seaview's bow had eight windows in the film and the first season of the television series, and four windows in seasons two through four of the series. The interior shots always showed only four windows although it did indeed imply two levels in the feature's scene with the giant octopus attack. Also in seasons two through four of the TV version, a pair of sliding metal "crash doors" shut across the face of the bow's observation deck to protect the four-window transparent surface in emergencies. In Theodore Sturgeon's novelization of the film, the windows are described as "... oversized hull plates which happen to be transparent." "They are incredibly strong because they are made of "X-tempered herculite", a top secret process developed by Nelson. To avoid a claustrophobic feeling during viewing of the 1961 feature film, Seaview’s interior was considerably more spacious and comfortable than any real military submarine. This was further enlarged when the Flying Sub was added to the miniatures with an even more open set for the control room interior.
The stern had unconventional, lengthy, V-shape planes above the twin engine area. On the original Seaview design, a single, central skeg rudder was specified, as well as two trailing edge control surfaces similar to an aircraft V-tail; a combination elevator-rudder or "ruddervator" fitted to the Beechcraft Bonanza and other aircraft.  But on the filmed miniatures, the 8 1/2 foot (103") miniature had three rudders: one behind each nacelle and on the rear most portion of the skeg (see "The Ghost of Moby Dick"). This functional skeg rudder was only fitted to the 103" miniature and non-operationally inferred on the 51 1/2" miniature and not at all on the 206" version which had a fixed skeg.

In both the film and the series, Seaview was armed with torpedoes and ballistic missiles. The series added anti-aircraft missiles to Seaview's armory. They were called "interceptor missiles" in the pilot episode, and "sea to air missiles" in the episode "Terror" (season 4, episode 10).
In seasons two through four of the series, the forward search light also housed a laser beam that could be used against hostile sea life or enemy vessels.
Seaview was also capable of electrifying the outer hull, to repel attacking sea life that were trying to destroy the ship. In the episode "Mutiny" (season 1, episode 18), Crane ordered the "Attack Generators" made ready to use this capability on a giant jellyfish.
Lastly, Seaview was outfitted with an "ultrasonic" weapon capable of causing another submarine to implode, though special authorization was normally required to utilize it. ("The Death Ship", Season 2, Ep 22)
 The Seaview's hull was partially protected by an "electronic defense field". ("Rescue", Season 2, Ep 9)

Although never stated, it was implied that Seaview used some kind of aquatic jet engine, which might possibly explain her speed (very fast for a submarine) and her penchant for dramatic emergency surfacing. The episode "A Time to Die" (season 4, episode 11) begins with Seaview being struck by a vibration from an unknown source. Nelson says, "I'd say it was a drive shaft bearing, if we used propellers." However, this contradicts an earlier episode: in "The Creature" (season 1, episode 28) the engine room reports that "drive shafts to the propellers are jammed." In the episode "Hail to the Chief" (season 1, episode 16), Seaview runs submerged at 40 knots from Norfolk, Virginia to the Virgin Islands.
In the episode "The Ghost of Moby Dick," Dr. Walter Bryce (Edward Binns) says, "I thought these nuclear submarines made better speed underwater," and Nelson agrees with him. In the episode "The Return of the Phantom," Lieutenant Commander Morton states that, "Every man who's ever served aboard a nuclear sub knows they make better time when they're submerged."
Whether a submarine is faster submerged or on the surface depends on her hull design, not her power plant. America's early nuclear submarines were slightly faster submerged than on the surface because their hulls were streamlined in accordance with the Greater Underwater Propulsion Power Program (GUPPY). An "Albacore hull", which Seaview did not have, is necessary for submerged speed to be significantly higher than surface speed. USS Triton, the real-life submarine whose hull Seaview most nearly resembles, was slower when submerged than on the surface.
In Theodore Sturgeon's novelization of the film Voyage to the Bottom of the Sea, Seaview is faster on the surface than underwater: "...the Captain ...proceeded on the surface, where it was possible to squeeze another fifteen knots out of the big submarine."
In the series, there are many shots of Seaview running on the surface with the bow higher than the stern, and water splashing at the bottom of the bow. But there are also shots of her running on the surface and properly trimmed fore and aft - that is, the bow and stern are level. In these shots, the water flows up and over the bow, similar to a submarine with an Albacore hull (for an example, see the photo in the article USS Skipjack (SSN-585)). Therefore, it is possible that Seaview was faster submerged than on the surface. Such shots can be seen in the opening titles of the first season, and in the episodes "The Ghost of Moby Dick" and "Long Live the King" (season one episode 15). The episode "Hail to the Chief" (season one episode 16) has a shot of Seaview properly trimmed fore and aft, followed immediately by a shot of her with the bow higher than the stern.Between the TV version's first and second seasons, the Seaview miniatures were extensively revised. Dated May 1965 the drawings penned by William Creber (who also designed the Flying Sub itself) stated "modifications to be applied to all miniatures." The number of bow windows was reduced from eight on two levels of four each to a single row of four (actually two with a dividing girder.) This then matched the interior set with the exterior miniatures but with the added detrimental effects of a more bulbous frontal appearance and a reduction in apparent overall size of the vessel. The Control Room, previously located on an upper level, was moved forward on a lower level ahead of the conning tower, to connect directly with the Observation Room, and a large hangar bay was added to the bow, beneath the Observation Room/Control Room combination. This hangar held the 36 foot wide and long, flying submersible, aptly called the "Flying Sub" or "FS-1", implying that there were several more back at the base, which would have to be the case since several Flying Subs were lost to mishaps or combat during the run of the show. Promotional materials published between the first and second seasons referred to it as the Flying Fish, but the name was evidently dropped prior to the start of filming and was never used in the show.[citation needed] It was deployed through bomb-bay like doors. As it broke the surface, its engines could generate enough thrust for the vehicle to take off and fly at supersonic speeds. The Flying Sub was also nuclear powered.
Three models of Seaview — a 1/8" to the foot 4 (51½"), a 1/4" to the foot 8.5 (103"), and a 1/2" to the foot 17 feet (206") (1.2, 2.4 and 5.5 m) long — version were built (eight-window nose in the motion picture and first television season, four-window version thereafter). The four-foot wood and steel tube approval/pattern model was extensively seen in the feature and on the TV series used as set decoration on a shelf in the observation nose, and behind Nelson's desk in his cabin. The eight-foot model had external doors for a not fitted nine-inch Flying Sub, while a more detailed 18-inch Flying Sub was held within the larger Seaview. For close-ups, a three-foot Flying Sub was produced, which was also used in the aerial sequences. All three Seaview models were built for a total 1961 price of $200,000 by Herb Cheeks' model shop at Fox, and were filmed by L. B. Abbott who won two Emmy Awards for special effects in the series. For the television series a rather poorly rendered two-foot model was built.
The fates of the three original models vary; the original eight-window wood and steel four-foot display model was damaged in an altercation between writer Harlan Ellison and ABC Television executive Adrian Samish and after a full restoration resides in a private collection. There were at least two fiberglass cast "wet models" in this size all of which are now in private hands. One of the two eight-foot model was extensively modified; (bow cut off) for use in the short-lived 1978 series The Return of Captain Nemo and aside from the nose section, is believed to have been destroyed. The single 17-foot model sat in the Virginia Beach garage of model maker Dave Merriman (who built several of the miniatures for The Hunt for Red October movie) during most of the 1980s where it was modified from its original appearance. It then was displayed above the bar at the (now-defunct) Beverly Hills Planet Hollywood restaurant from 1993-2002 and after a partial restoration, is on display at the Museum Of Science Fiction located in Seattle, Washington. There were several miniatures of the Flying Sub and the mini-sub, and after a props and memorabilia auction in the late 1970s at 20th Century Fox most have found their way into private collections.


Friday, September 15, 2017

British HMS X-Craft Submarine

Here are some images of Merit's 1/35 scale British HMS X-Craft submarine.

From Wikipedia"
The X class was a World War II midget submarine class built for the Royal Navy during 1943–44.
Known individually as X-Craft, the vessels were designed to be towed to their intended area of operations by a full-size 'mother' submarine - (usually one of the T class or S class) - with a passage crew on board, the operational crew being transferred from the towing submarine to the X-Craft by dinghy when the operational area was reached, the passage crew returning with the dinghy to the towing submarine. Once the attack was over, the X-Craft would rendezvous with the towing submarine and then be towed home. Range was limited primarily by the endurance and determination of their crews, but was thought to be up to 14 days in the craft or 1,500 miles (2,400 km) distance after suitable training. Actual range of the X-Craft itself was 500 nmi (930 km) surfaced and 82 nmi (152 km) at 2 knots (3.7 km/h) submerged.

The craft was about 51 feet (15.5 m) long, 5.5 feet (1.68 m) in maximum diameter and displaced 27 tons surfaced and 30 tons submerged. Propulsion was by a 4-cylinder Gardner 4LK [1] 42 hp diesel engine, converted from a type used in London buses, and a 30 hp electric motor, giving a maximum surface speed of 6.5 knots (12 km/h), and a submerged speed of 5.5 knots (10.1 km/h). The crew initially numbered three—commander, pilot and ERA (Engine Room Artificer, i.e. engineer) but soon a specialist diver was added, for whom an airlock, known as a wet and dry compartment, was provided. The ERA, usually a Navy Chief Petty Officer, operated most of, and maintained all of, the machinery in the vessel.
The weapons on the "X-Craft" were two side-cargoes - explosive charges held on opposite sides of the hull with two tons of amatol in each. The intention was to drop these on the sea bed underneath the target and then escape. The charges were detonated by a time fuse.
The craft were fitted with electro-magnets to evade detection by anti-submarine detectors on the sea bed.

A number of development craft were built before it was felt that a feasible weapon had been produced. The first operational craft was X3 (or HM S/M X.3), launched on the night of 15 March 1942. Training with the craft began in September 1942, with X4 arriving in October. In December 1942 and January 1943 six of the "5-10" class began to arrive, identical externally but with a completely reworked interior.
These operations were part of a longer series of frogman operations, see human torpedo.
The operational base and training establishment was HMS Varbel at the former Kyles Hydro Hotel at Port Bannatyne on the Isle of Bute in the Inner Hebrides of Scotland. Their first deployment was Operation Source in September, 1943, an attempt to neutralise the heavy German warships based in Northern Norway. Six X-Craft were used, but only 2 successfully laid charges (under the German battleship Tirpitz); the rest were lost, scuttled or returned to base. Tirpitz was badly damaged and out of action until April 1944.
This was the only multiple X-craft attack. The lost craft were replaced early in 1944 with X20 to X25 and six training-only craft.
On 15 April 1944 X24 attacked the Laksevåg floating dock at Bergen. X22 was intended for the mission, but had been accidentally rammed during training and sunk with all hands. X24 made the approach and escaped successfully, but the charges were placed under Bärenfels, a 7,500 ton merchant-vessel along the dock, which was sunk; the dock suffered only minor damage. On 11 September 1944, the operation was repeated by X24, with a new crew; this time the dock was sunk.


X-Craft were involved in the preparatory work for Overlord. Operation Postage Able was planned to take surveys of the landing beaches with X20, commanded by Lt KR Hudspeth, spending four days off the French coast. Periscope reconnaissance of the shoreline and echo-soundings were performed during daytime. Each night, X20 would approach the beach and 2 divers would swim ashore. Soil samples were collected in condoms. The divers went ashore on two nights to survey the beaches at Vierville-sur-Mer, Moulins St Laurent and Colleville-sur-Mer in what became the American Omaha Beach. On the third night, they were due to go ashore off the Orne Estuary (Sword Beach), but by this stage fatigue (the crew and divers had been living on little more than benzedrine tablets) and the worsening weather caused Hudspeth to shorten the operation, returning to Dolphin on 21 January 1944. Hudspeth received a bar to his DSC.
X20 and X23 acted as lightships to help the D-Day invasion fleet land on the correct beaches (Operation Gambit), as part of the Combined Operations Pilotage Parties (COPP).
X24 is the only remaining intact example of an X-Craft. It can be found in the Royal Navy Submarine Museum.
Operations continued in the Far East with the revised XE class submarines.
 
The remains of an XT-class craft on the beach at Aberlady Bay in 2008. The bow is to the left, the stern to the right. From left to right can be seen the wet and dry chamber hatch, the "conning tower" (the periscopes penetrated the hull through the "eye" shape) and the secondary hatch.

Monday, April 10, 2017

Robert Fulton's Nautilus

Here are some images of Cottage Industry Models 1/32 scale Robert Fulton's Nautilus.

From Wikipedia"
Nautilus was a submarine first tested in 1800. Though preceded by Cornelius Drebbel's vessel of 1620, Nautilus is often considered to be the first practical submarine.
 The Nautilus was designed between 1793 and 1797  by the American inventor Robert Fulton, then living in the French First Republic. He unsuccessfully proposed to the Directory that they subsidize its construction as a means to balance British seapower. His second, also unsuccessful, proposal to them was that he be paid nothing until the Nautilus had sunk British shipping, and then only a small percentage of the prize money. Fulton directed his next proposal to the Minister of Marine, who granted him permission to build.

Fulton built the first Nautilus of copper sheets over iron ribs at the Perrier boatyard in Rouen. It was 21 ft 3 in (6.48 m) long and 6 ft 4 in (1.93 m) in the beam. Propulsion was provided by a hand-cranked screw propeller. The hollow iron keel was the vessel's ballast tank, flooded and emptied to change buoyancy. Two horizontal fins, diving planes in modern terms, on the stubby horizontal rudder controlled angle of dive. Overall, Nautilus resembled a modern research submarine, such as the NR-1, having a long teardrop hull. The design included an observation dome, somewhat similar in appearance, if not function, to the conning tower of later submarines. When surfaced, a fan-shaped collapsible sail, reminiscent of those popular on Chinese ships, could be deployed. Air, beyond that enclosed within the vessel, could be provided by a snorkel constructed of waterproofed leather.
Nautilus was designed from the start to carry what Fulton called a "carcass", a naval mine intended to be dragged into contact with an enemy ship. A device on the top of the dome drove a spiked eye into the enemy's wooden hull. The submarine then released its mine on a line that went through the eye. The submarine sped away. When the long line had paid out, the mine would strike the target hull and explode by a detonator. These "carcasses" were variously sized copper cylinders carrying between ten and two hundred pounds of gunpowder. Contact with the hull triggered a gunlock mechanism.
Nautilus' first test dives were in the Seine at Rouen, in the Saint-Gervais dock, beginning July 29, 1800. These tests were all successful, but the river current interfered with some tests, so Fulton took the boat to Le Havre to work in the quiet salt water of the harbor. He tested endurance with a candle lit, and found the flame did not challenge the air capacity of the snorkel. He also tested the speed of his two men cranking against that of two men rowing on the surface. Nautilus covered the 360 ft (110 m) course two minutes faster than the rowing crew. During this time he changed the screw propeller to one with four vanes, like a windmill, and modified the rudder.
Through friends like Gaspard Monge and Pierre-Simon Laplace, Fulton obtained an interview with Napoleon, but was unable to garner support for his vessel; however, Fulton's friends pushed the Minister of Marine into appointing a scholarly panel, to consist of Volney, Monge, and Laplace, to assess the submarine,.
On July 3, 1801, at Le Havre, Fulton took the revised Nautilus down to the then-remarkable depth of 25 feet (7.6 m). With his three crewmen and two candles burning he remained for an hour without difficulty. Adding a copper "bomb" (globe) containing 200 ft3 (5.7m3) of air extended the time underwater for the crew for at least four and a half hours. One of the renovations included a 1.5-inch-diameter (38 mm) glass in the dome, whose light he found sufficient for reading a watch, making candles during daylight activities unnecessary. Speed trials put Nautilus at two knots on the surface, and covering 400 m in 7 minutes. He also discovered that compasses worked underwater exactly as on the surface.
The first trial of a "carcass" destroyed a 40-foot sloop provided by the Admiralty. Fulton suggested that not only should they be used against specific ships by submarines, but be set floating into harbors and into estuaries with the tide to wreak havoc at random.
The overseeing committee enthusiastically recommended the building of two brass subs, 36 ft (11 m) long, 12 ft (3.7 m) wide, with a crew of eight, and air for eight hours of submersion.
In September, Napoleon expressed interest in seeing the Nautilus, only to find that, as it had leaked badly, Fulton had her dismantled and the more important bits destroyed at the end of the tests. Despite the many reports of success by reliable witnesses, like the Prefect Marine of Brest, Napoleon decided Fulton was a swindler and charlatan. The French navy had no enthusiasm for a weapon they considered suicidal for the crews even though Fulton had had no problems and despite evidence it would be overwhelmingly destructive against conventional ships.

Though knowing the French had no further interest, the British preferred to keep a control on this dangerous device by paying Fulton £800 to come to England (his original planned destination before going to France) and develop a second Nautilus for them. The victory at Trafalgar made his work no longer a danger, and he was ignored until he left, in frustration, for America in October 1806. He left his papers on submarines with the American consul in London. He never asked for them, never referred to his Nautilus work, and the papers went unpublished until 1920.
These papers show that his British Nautilus was planned as a 35 ft (11 m) long, 10 ft (3.0 m) beam sea-going boat with a crew of six, to be provisioned for 20 days at sea. The upper surface was provided with 30 "carcass" compartments. The hull was to imitate a sea-going sloop with conventional-looking mast and sails that could be lowered and unstepped for submersion. Her two-bladed propeller, still hand-cranked, folded up out of the water when surfaced to reduce drag. When submerged, air came through two streamlined ventilation pipes, and light from the conning tower. However, none of this was actually constructed.

Monday, February 13, 2017

Type VIIC U-Boat

Here are some images of Trumpeter's 1/48 scale German Type VIIC U-Boat U-552

From Wikipedia"
The Type VIIC was the workhorse of the German U-boat force, with 568 commissioned from 1940 to 1945. The first VIIC boat commissioned was the U-69 in 1940. The Type VIIC was an effective fighting machine and was seen almost everywhere U-boats operated, although its range of only 8,500 nautical miles was not as great as that of the larger Type IX (11,000 nautical miles), severely limiting the time it could spend in the far reaches of the western and southern Atlantic without refueling from a tender or U-boat tanker. The VIIC came into service toward the end of the "First Happy Time near the beginning of the war and was still the most numerous type in service when Allied anti-submarine efforts finally defeated the U-boat campaign in late 1943 and 1944.
Type VIIC differed from the VIIB only in the addition of an active sonar and a few minor mechanical improvements, making it 2 feet longer and 8 tons heavier. Speed and range were essentially the same. Many of these boats were fitted with snorkels in 1944 and 1945.
They had the same torpedo tube arrangement as their predecessors, except for U-72, U-78, U-80, U-554, and U-555, which had only two bow tubes, and for U-203, U-331, U-351, U-401, U-431, and U-651, which had no stern tube.
On the surface the boats (except for U-88, U-90 and U-132 to U-136 which used MAN M6V40/46s) were propelled by two supercharged Germaniawerft, 6 cylinder, 4-stroke M6V 40/46 diesels totaling 2,800 to 3,200 PS (2,100 to 2,400 kW; 2,800 to 3,200 shp) at 470 to 490 rpm.
For submerged propulsion, several different electric motors were used. Early models used the VIIB configuration of two AEG GU 460/8-276 electric motors, totaling 750 PS (550 kW; 740 shp) with a max rpm of 296, while newer boats used two BBC GG UB 720/8, Garbe, Lahmeyer & Co. RP 137/c or Siemens-Schuckert-Werke (SSW) GU 343/38-8 electric motors with the same power output as the AEG motors.
Perhaps the most famous VIIC boat was U-96, featured in the movie Das Boot.