The torpedo is only used by the Nautilus submersibles of Barak Varr, although some experiments have been made with mounting a single torpedo tube on gunboats and Monitor class warships, with mixed results. The torpedo is a streamlined underwater projectile in a spring-driven tube of copper, powered by a clockwork motor linked to a propeller. It carries an explosive warhead, fused to detonate on impact, which is sufficiently powerful to cripple a large ship or sink a small one.[1a][2a]
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