The Porpoise class was an eight-boat class of diesel-electric submarines operated by the Royal Navy. This class was originally designated patrol submarines, then attack. They were the first convention
HMS Rorqual
Tigerfish (torpedo)
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The Mark 24 Tigerfish was a heavyweight acoustic homing torpedo used by the Royal Navy during the 1980s and 90s. Conceptual development dates to the mid-1950s, and formally started in 1959 with a targ
British Porpoise-class submarine
…six in the bow, and two in the stern. Initially, up to 30 Mark 8 or Mark 23 torpedoes were carried, although these were replaced in the 1970s by the Mark 24 Tigerfish torpedo. The class were also the first since the World War I-era R class to not carry a deck gun. The Porpoises were far more capable than previous…
Tigerfish torpedo