aid
assistance
belt
blue
buoy
circle
cruise
danger
emergency
float
guard
help
insurance
life
lifebelt
lifebuoy
lifesaver
marine
nautical
object
pool
preserve
preserver
protection
red
rescue
rescuer
ring
risk
rope
round
rubber
safety
save
saver
sea
security
ship
sos
support
survival
swim
swimming
water