Although Steel Fish Ltd has been trading since 2007, it did not come fully into its own till the winter of 2017/18, when I left my post as senior engineer at JFD to design and build the DV24 for Triton. Having said that, the first totally Steel Fish project was the Pilotfish (2013-15), in parallel with but separate from my JFD work.
Pilotfish is a man powered submarine conceived by an oil industry engineer, Antoine Delafarge, to cross the English Channel from Plymouth to Saint-Malo. Although this 2-man pedal powered craft was completed and sea-trialled in Plymouth, it never made the trip.