Harbor Patrol Boat (sub chaser) guarding Charlestown Navy Yard since war with Germany was declared.

U.S. dreadnought from above |
USS Virginia leaves Navy Yard with sailors who are willing to learn |
USS Pequot carrying 18 miles of submarine cable to be laid in southern waters |
USS Pequot carrying 18 miles of submarine cable to be laid in southern waters |
USS Ossipee at Navy Yard |
USS Mallard - sub salvage vessel in Navy Yard |