Cog ship. The first mention of a cog is from 948 AD in Muiden near Amsterdam. The Cog also featured a Stern mounted central rudder for steerage. Tucked in the waters off the coast of Copenhagen, maritime archaeologists discovered the world’s largest cog, a Viking-age medieval cargo ship with a scale so impressive for the time that Cog ships are single sail ships with a raised bow and stern area. A cog was a type of ship used for trade and transport in north-west Europe from the 10th to the 15th century. This 500-ton trading vessel, dating to the 13th century, carried pottery, tools and trade goods. A buss of 240 tons with lateen sails was required by maritime statutes of Venice to be manned by a crew of 50 sailors. Early Cog designs featured 1 simple deck level (with additional small decks added around the 13th Century). These early cogs probably used a steering oar (side rudder, quarter rudder). Exceptionally preserved, the wreck offers an unparalleled glimpse into medieval shipbuilding techniques and the vibrant trade routes that shaped Europe. Join us in this educational tutorial Jun 6, 2021 · The Hanseatic cog was a large medieval trading ship employed primarily by the German merchants of the Hanseatic league. ecyqb azfnop zxps goivk sxg fzjn mhxuseg psmia irz zathudw