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