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NavSource Online:
Section Patrol Craft Photo Archive

Porpoise (SP 4)

Call sign (1919):
Love - Boy - Jig - Sail

Awards, Citations and Campaign Ribbons

Precedence of awards is from left to right
World War I Victory Medal

Acquired Section Patrol Boat:
  • Designed and built by Oscar Anderson, South Norwalk, CT
  • Completed for Francis Holley, New York, NY, as yacht Casilda (ON 207718), 1910
  • Sold to Ogden M. Reid, New York, NY, renamed Porpoise, 1914
  • Sold to Oliver C. Townsend, Milton Point, NY, 1916
  • Acquired by the Navy, 1917
  • Details of service unknown
  • Returned to owner, 27 January 1919
  • Sold to Robert A. Toms, New York, NY, renamed Casilda, 1920
  • Sold to John P. Smyth, New York, NY, 1924
  • Sold to Frank Kapps, Miami, FL, 1926
  • Abandoned, 1930
  • Reinstated on registry as party fishing boat, owned by Harold L. Belcher, Miami, FL, 1932
  • Sold to C.Q. Brooks, Coconut Grove, FL, 1935
  • Final disposition, abandoned 1940
    Hull Wood
    Displacement 22 gross tons, 19 net tons
    Length 41' 9" waterline, 48' 0" overall
    Beam 11' 9"
    Draft 5' 3"
    Speed unknown
    Complement unknown
    Armament unknown
    one Clifton, four cylinder, four cycle gasoline engine
    one shafts, unknown hp
    Click on thumbnail
    for full size image
    Size Image Description Source
    31k Small dolphin-like cetaceans classified under the family Phocoenidae. Although similar in appearance to dolphins, they are more closely related to narwhals and belugas than to the true dolphins. There are eight extant species of porpoise, all among the smallest of the toothed whales. Porpoises are distinguished from dolphins by their flattened, spade-shaped teeth distinct from the conical teeth of dolphins, and lack of a pronounced beak. Tommy Trampp
    Casilda / Porpoise
    43k Casilda as built. Image from Motorboat, 10 December 1910. Dave Wright
    83k Image from The Rudder, February 1917 Joe Radigan

    There is no DANFS history available for Porpoise (SP 4)

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    This page was created by Joseph M. Radigan and is maintained by David L. Wright
    All pages copyright NavSource Naval History
    Last Updated 25 February 2024