The cocca was the Mediterranean equivalent of the German and north Europe cog.
She was used from the 14th century until ca 1600, but modified for the local conditions – mainly lighter winds and lower seas.
She were built at Genoa and Venice but also in other Mediterranean ports.
The stamp is designed after a model in a museum in Venice which also is depict in the book “Ships” 5.000 Years of Maritime Adventure by Brian Lavery. She shows a coca of a later date with four masts and a bilge keel.
The term cocca or cocha was gradually replaced by navis by the end of the 14th century.
She were clinker built and mostly used as a merchantmen sometimes as a military transport.
Later carvel built, bluff ends, shallow keel; deadwood aft, with a fore and aft castle.
Early vessel fitted out with a quarter rudder or stern rudder. First single mast with square sail later types altered to a multimasted vessel, some with a large square mainsail, small square foresail, and a small lateen mizzen sail.
Generally carried a bowsprit, while the mainmast carried a cage from where arrows or stone shots were discharged.
Crews from 35 up to 500 men, while the larger ships carried also archers.
Reported lengths from 2 - 30m., beam 6 - 10.6m. depths amidships 1.6 – 2.7m.
Netherlands Antilles 2010 175c sg?, scott?
Source: Aak to Zumbra, a Dictionary of the World’s Watercraft, Ships 5000 Years of Maritime Adventure by Brian Lavery.