CGI image of two frogmen with Siebe Gorman CDBA rebreathers riding a human torpedo. The warhead is detached from the vehicle for placement upon or under a ship, allowing the operators to use the machine for escape.

A wet sub is a type of underwater vehicle (submarine) that does not provide a dry environment for its occupants. Usually, wet suited scuba divers will ride upon the device (as one would ride a motorcycle, or with an opening as in a bobsled, although it can be designed to fully enclose its occupant(s) to provide lower drag. An enclosed vehicle may provide a dry viewing chamber for the occupant(s). The motive force is an electric motor and usually the power source is an electric battery. The depth is typically limited by the reqirements of a scuba diver. Two frogmen with CDBA rebreathers riding a human torpedo or underwater chariot. Made by User:Anthony Appleyard. ... Two frogmen with CDBA rebreathers riding a human torpedo or underwater chariot. Made by User:Anthony Appleyard. ... Computer-generated imagery (CGI) is the application of the field of computer graphics (or more specifically, 3D computer graphics) to special effects. ... For the Wizard of Oz series character, see Frogman (Oz character). ... The Siebe Gorman CDBA from three angles The Clearance Divers Breathing Apparatus (CDBA) is a type of rebreather made by Siebe Gorman in England. ... Inspiration closed circuit diving rebreather A rebreather is a type of breathing set that provides a breathing gas containing oxygen and recycles exhaled gas. ... // CGI image of two frogmen with Siebe Gorman CDBA rebreathers riding a human torpedo. ... German UC-1 class World War I submarine A model of Günther Priens Unterseeboot 47 (U-47), German WWII Type VII diesel-electric hunter-killer (SSK) submarine Inside of the Argonaute, showing the typical obstructed, tiny space of a post-WWII diesel attack submarine. ... A surfer in a wetsuit. ... Early ideas of autonomous under-water systems appear in Twenty Thousand Leagues Under the Sea Scuba Diving is the use of independent breathing equipment to stay underwater for long periods for recreational diving and professional diving. ... A motorcycle or motorbike is any two-wheeled vehicle powered by an engine. ... Bobsleigh is a winter sport in which teams make timed runs down narrow, twisting, banked purpose-built iced tracks in a gravity-powered, steerable sled. ...

Military use

This device may be configured as a mine-laying system (particulary for attaching "limpet" mines directly to a ship) or as a torpedo, or may be used for intellegence gathering in harbors. They have also been used to plant listening and recording devices on undersea cables (see Operation Ivy Bells). For such military use the operator will use a rebreathing device so as not to leave a trail of bubbles. Such devices are employed from a service ship or a specially outfitted conventional submarine. A naval mine is a self-contained explosive device placed in water to destroy ships or submarines. ... A modern torpedo, historically called a locomotive torpedo, is a self-propelled projectile that (after being launched above or below the water surface) operates underwater and is designed to detonate on contact or in proximity to a target. ... Operation Ivy Bells, was a US Navy and CIA mission whose objective was to place wire taps on Soviet underwater communication lines during the Cold War. ...

Hobbyists

A wet sub is attractive to the amateur or small commercial builder since many of the problems associated with a dry sub are avoided — only the propusion and power systems need to be waterproof and life safety is much less of an issue than it is with a sealed occupant chamber. Complete submarines of this type are also available commercialy. Commercial vendors are found using the term "wet sub" in a search engine

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