anchor
anchored
bind
bollard
cable
circle
cord
details
dock
fasten
fastening
horizontal
industrial
jetty
join
knot
lasso
moored
mooring rope
no people
nobody
pier
piers
power
quay
quayside
rope
ropes
round
safety
sailor
secure
securing
security
stability
strength
string
strong
tie
tied
tight
twine
twisted
white