attention
blue
border
buoy
calm
caution
coast
coastal
danger
float
floatation
guard
guide
help
indicator
japan
life
limit
marine
mark
marker
nautical
navigation
object
ocean
of
offshore
pointer
protection
range
red
rescue
safe
safety
sailing
save
sea
seascape
secure
security
sign
signal
swim
symbol
warn
water
waves
wavesattention