268:, AP6 prototype successfully completed sea trials in 2004. These started in No. 2 Basin in Devonport Dockyard and then continued in open water South of Plymouth Breakwater. 25 dives were successfully completed. The test dives reached 180 feet with the surveyor on board. The vessel proved very easy to control and could hover a few inches above the seabed. At slow speed a great variety of sea life could be observed. A final dive took a World War 2 U-Boat veteran to visit the last ship he had sunk, the James Egan Lane. The submarine is now in the US.
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was pressure tested down to 410 m (1,350 ft) (required is 375 m (1,230 ft). The budget was US$ 1.5 million and the final cost ended at US$ 2 million. The dive angle is partially accomplished with the battery holder, weighing 1,750 kg (3,860 lb), sliding back and forward
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allows the submarine to be placed on station at the dive site relatively rapidly, without the need for a large towing vessel and without eating into battery reserves. In addition, it is possible to charge the air banks (used to "blow" the main ballast tanks) when under way on the surface, reducing
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The passenger section of the pressure hull consists of two intersecting transparent acrylic spheres produced by
Stanley Plastics Ltd, West Sussex. The spheres have an internal diameter of 1.85 m (6 ft 1 in) and are 100 mm (3.9 in) thick, allowing passengers to have a wide
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maintenance time at the dock. Charging the main battery using the diesel engine to drive the main motor as a generator is also possible. The next generation will use the same rare-earth motor technology as
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The vessel is the first ever to employ this twin sphere geometry. The craft is a 30% larger version of the US Submarine
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internal diameter is just 1.44 m (4 ft 9 in) to reduce the crane weight. The passenger section of the
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Recent update on the sub by Paul
Moorhouse at the Aquanauts Forums
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Commanded by
Richard Dawson, a member of the design team, the
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TV Series, "The Man Who Built His Own
Submarine" (2006)
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NOVA episode about Alicia, "Underwater Dream
Machine"
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designed and built by Marlin
Submarines of Plymouth,
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247:The diesel-electric configuration of the
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202:(Marlin Submarines AP6) is a 6-seater
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31:contains content that is written like
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152:11.2 m (36 ft 9 in)
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165:15 kW electric motor (submerged)
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162:98 kW diesel engine (surfaced)
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324:. 2008-06-09. Archived from
175:72 hours max. time submerged
286:National Geographic Channel
243:Diesel-Electric versatility
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183:410 m (1,350 ft)
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128:General characteristics
401:Individual watercraft
52:neutral point of view
391:Personal submarines
369:The Science Channel
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284:Dream submarine -
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350:Marlin Submarines
322:"U.S. Submarines"
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141:Displacement
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42:by removing
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115:$ 2 million
396:2004 ships
385:Categories
332:2022-08-16
307:2022-08-16
272:References
219:Visibility
215:on rails.
180:Test depth
157:Propulsion
40:improve it
358:submarine
233:Discovery
229:Discovery
204:submarine
191:6 persons
172:Endurance
144:18 tonnes
120:Completed
188:Capacity
208:England
104:Builder
89:History
356:Alicia
266:Alicia
249:Alicia
237:Alicia
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199:Alicia
149:Length
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254:S201
123:2004
112:Cost
94:Name
136:AP6
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