Definitions by Balmipour

ss 

In the navy, when prefixing a ship name, was used to mean the ship is a steamer (Screw Steamer), in opposition with SV (Sailing Vesse)", or other ship types.

(see wikipedia's Ship_prefix list for more details)

In 1847, the revolutionary SS Great Britain became the first iron-hulled screw-driven ship to cross the Atlantic

The SS Savannah left the port of Savannah, Georgia, on May 22, 1819

ss by Balmipour September 12, 2015