Not much when you're trying to hold a thousand ton vessel.

The 188 ton vessel carried 14 guns and 120 men.

The great change occurred in 1757 after they launched a vessel of 250 tons.

The 71 ton vessel carried 4 guns and had a crew of 12 men.

Three vessels of 215 to 222 gross tons were built as water carriers.

The 7,607 ton vessel was built in 1945 in California.

This was an 84-foot vessel of 400 tons named Namsenfjord.

The ship lift's basin can carry vessels of up to 250 tons.

Quebec City has a shipping year involving 198 vessels, of 46,514 tons.

Only three of these 2,600 ton vessels were launched.