accident
aid
assistance
background
belt ship
buoy
circle
color
cruise
danger
debt
deck
device
disaster
drown
emergency
equipment
float
floatation
guard
help
life
lifebelt
lifebuoy
lifeguard
lifesaver
marine
nautical
plunge
pool
port
precaution
preserve
preserver
protection
red
rescue
rescuer
resort
ring
ripple
rippled
rope
round
safety
save
saver
secure
security
shipwreck
sos
swim
water
white
wood
wooden
wreck