Tug with funnel down passing under bridge

River Thames barges in foreground

Tugboat at sea

Tug on river Liverpool England

Oceanliner at anchor in harbour

Tug showing bridge and funnel at quay Liverpool England

Tugboat hauling ship through harbor

Liner and tug in dock Liverpool England

Two tugs on river Liverpool England

Tugs on river Liverpool England

Aircraft carrier towed by tugs

Dock Southampton England UK

Tower Bridge at dawn

Ships in dock Liverpool England

Liner in dock - Liverpool England

Tugs alongside liner. Liverpool England

Tugs anchored at Wapping Jetty

Liner and tugboat in dock Liverpool England

"Queen Mary" Southampton England

Tugs along quay Liverpool England

"Queen Mary" leaving dock towed by tugs Southampton England

Tugs alongside quay

City life

Tugs pushing and pulling "Queen Mary" Southampton England

Tugs towing liner into dock