Please report any broken links or trouble you might come across to the Webmaster. Please take a moment to let us know so that we can correct any problems and make your visit as enjoyable and as informative as possible.

NavSource Online:
Section Patrol Craft Photo Archive

Manatee (SP 51)


  • The first Manatee was built in 1915 by Brown Brothers Shipyard, Tottenville, Staten Island, NY
  • Acquired by the Navy 21 April 1917
  • Placed in service 23 April 1917
  • Struck from the Naval Register 1 July 1920
  • Fate unknown.


  • Displacement 2 t.
  • Length 35'
  • Beam 8' 6"
  • Draft 2' 3"
  • Speed 22 kts.
  • Complement: Four
  • Armament: One 1-pounder
  • Propulsion: One 135hp 6-cylinder Sterling gasoline engine, one shaft.
    Click on thumbnail
    for full size image
    Size Image Description Source
    Manatee 86k

    Manatees (family Trichechidae, genus Trichechus) are large, fully aquatic, mostly herbivorous marine mammals sometimes known as sea cows. There are three accepted living species of Trichechidae, representing three of the four living species in the order Sirenia: the Amazonian manatee (Trichechus inunguis), the West Indian manatee (Trichechus manatus), and the West African manatee (Trichechus senegalensis). They measure up to 4.0 meters (13.1 ft) long, weigh as much as 590 kilograms (1,300 lb),[2] and have paddle-like flippers. The etymology of the name is unclear, with connections having been made to Latin manus (‘hand’), and to a word – sometimes cited as manati – used by the Taíno, a pre-Columbian people of the Caribbean, meaning "breast". Manatees' other name, sea cows, comes from the fact that they are slow plant-eaters, peaceful and similar to cows on land. They often graze on water plants in tropical seas

    Tommy Trampp

    Commanding Officers
    01ENS Schuyler Dillon, USNRFNovember 1917 - June 1918
    Courtesy Joe Radigan

    View the Manatee (SP 51)
    DANFS history entry located on the Naval History and Heritage Command website
    Back to the Main Photo Index Back to the Patrol Craft/Gunboat/Submarine Chaser Ship Index Back to the Section Patrol Craft (SP) Photo Index

    Comments, Suggestions, E-mail Webmaster

    This page created by Joseph M. Radigan and maintained by David Wright
    All pages copyright NavSource Naval History