anchor buoys
beacon
bojenhof
buoy
caution
cutout
fairway
fishing
fishing buoy
fishnet mark
green
green color
harbor
marina
marine
maritime
marker
mussel
mussel breeding
nautical
navigate
navigation
north sea
note
ocean
port
portside
red
river
round
ship traffic
ships coastal
sign
signal
signal buoys
starboard
stock pile
tonne
traffic regulations
traffic signs
water
water mark
water sports
weltmeer
yellow