Barrier Boat
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The 19BB is a type of small tugboat used by the United States Navy. They were built by Chuck's Boat and Drive of Longview, Washington, in 2002 to deploy and maintain port security booms surrounding Na
19BB "Boomin Beaver" next to the USS Constitution
Boom (navigational barrier)
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A boom or a chain is an obstacle strung across a navigable stretch of water to control or block navigation. They are sometimes mixed with pile barrages.
Barrier Boat
…tugboat used by the United States Navy. They were built by Chuck's Boat and Drive of Longview, Washington, in 2002 to deploy and maintain port security booms surrounding Navy ships and installations in port. The first boat of the 13-boat order was delivered in January 2003. Originally designed to raft and…
A boom blocking the River Foyle during the siege of Derry
Crusaders break a chain protecting the harbour (at left) in the siege of Damietta.
Boom towers in Norwich
Remains of the great chain that protected the Golden Horn