Innespace Seabreacher (or Sea Breacher) is a two-seat semi-submersible[2] personal watercraft "submarine", with a shape based on that of a dolphin, and the ability to imitate a dolphin's movement.

The watercraft was designed and developed by two engineers—New Zealander Rob Innes and his partner American Dan Piazza—who are also the founders of the American company Innespace Inc., which markets, builds and sells the semisub watercraft to customers.

The concept came from VASH (variable attitude submersible hydrofoil), which was invented by Thomas "Doc" Rowe[3] and Dennis "Dusty" Kaiser in 1987 with his boat, Noland Won.

[4] The two seat vessel is powered by an Atkins Rotary Marine engine coupled to a Hurth V-drive transmission.

[citation needed] Seabreachers are available in a wide array of colour specifications and insignias.