quay
a pier or wharf, a place where boats are tied to the shore for loading or unloading
cargo
the goods that a ship is transporting
manacled
chained
grubby
dirty, shabby, grim
mute
silent, without tone
drab
dull, gloomy, cheerless, desolate
stranglehold
a grip that is choking
unclip
to loosen, un-tighten
Guinness
a type of Irish beer