bay
belt
blue
boat
buoy
circle
drowning
edge
emergency
equipment
ferry
float
hanging
help
horizon
lake
life
lifebuoy
lifeguard
light
line
marine
metal
nautical
near
object
ocean
orange
protect
protection
red
rescue
ring
rope
safe
safety
save
saver
sea
secure
security
ship
sink
sky
sos
swim
tourism
travel
water
white
yacht