Enter the following codes at the Boat Select screen.

Effect	Code
Armed Response	Highlight the Thresher and quickly press the Pilot button three times.
Blowfish	Highlight the Hazard and quickly press the Pilot button three times.
Chumdinger	Highlight the Razor Back and quickly press the Pilot button three times.
Tinytanic	Highlight the Tidal Blade and quickly press the Pilot button three times.