" wrote:

I always found it strange that there wasn't enough wood or other
light-weight materials onboard that could have been scavanged to
make ad-hoc rafts or other floatation aids.

You do know the water is rather chilly in the N. Atlantic in April?

Yes - hence the point about using any available materials or objects to
make a raft or floation aid to stay above the water.

Including ripping out any handy bathtubs...