you'll be replacing a lot of parts over the next while as the water does the damage, watch out the following:
shift and throttle cables,
shift cable (drive end)
wiring harness
all solenoids,
trim pump motor
all electrical components
main engine circuit breaker
if you don't already have one, install a water separating fuel filter, you'll need it. good luck, sunk boats aren't bad, but the gremlins are.