during
anchorage
area
auxiliary
backwater
berth
bottom
bucket
channels
climate
deepening
diesel
dredger
dredging
electric
enchanted
ensure
excavating
fairways
floating
ice
icy
inland
moored
multi
navigation
northern
port
propelled
quay
raids
removing
repair
reservations
river
safe
season
self
self propelled
severe
ship
shipyard
soil
technical
toilet
vessel
waterways
wharf
winter
wintering