Noun
English Wikipedia has an article on:torpedo tubeWikipedia
torpedo tube (plural torpedo tubes)
(nautical) A metal tube mounted in a submarine or surface warship into which a torpedo may be loaded and launched through the hull or from the deck; a torpedo launcher.
A more practical method of increasing combat endurance was the external torpedo tube, loaded only in port. Source: Internet
Another early torpedo boat, HNoMS Rap As originally built, Lightning had two drop collars to launch torpedoes; these were replaced in 1879 by a single torpedo tube in the bow. Source: Internet
It was basically a modified Mark 24 Mine with wooden rails to allow firing from a convert torpedo tube. Source: Internet
Later the bow torpedo tube was removed and two more 6-pounder guns added instead. Source: Internet
She was armed with two drop collars to launch these weapons; these were replaced in 1879 by a single torpedo tube in the bow. Source: Internet
Showell, p. 30 It had a double hull, a Körting kerosene engine, and a single torpedo tube. Source: Internet