Hmmm ! - refer to C S Forester - "Hornblower in the West Indies"

The capture of the Slaver "Estrela de Sud" (SP) was effected by the fastening of a drough (Sea Anchor) to the rudder by a swimmer whilst moored in a Spanish Harbour on the Main. An Auger was involved in the planning.

Fiction follows Folk, or Folk follows Fiction ???

BTW Forester was recognised as a reasonably accurate Naval Historian.

Gareth