Expert testimony indicated that a nuclear submarine that got entangled in the net of a trawler could pull down a vessel of about 250 tons within 80 seconds.

Did a submarine sink a trawler?

The deaths of two fishermen on a French trawler which sank in UK waters were accidental and not caused by a submarine, an inquest has found. ... But at the High Court, Judge Nigel Lickley QC concluded there was no submarine involvement in the sinking.

Has a submarine sunk a fishing boat?

Two of the UK's most senior Royal Navy officers have strongly rejected the suggestion that a submarine could have sunk a fishing boat that went down off the Cornish coast 17 years ago with the loss of five lives.