What is cog shipping?

What is cog shipping?

COG, Course Over Ground, indicates the direction of the boat’s heading relative to the land. Over ground means “in relation to the earth”, see also the term SOG. Therefore, COG means the true direction free from the effects of sea currents.

What were cogs used for?

Cogs were large sailing ships with their bows and sterns built at a higher level than the rest of the ship in order to form a castle like structure which was used to defend the ship from enemies using archers. Cog was the first type of boat that used the new idea of a rudder mounted on the stern for steering purpose.

What replaced the cog ship?

With the constant advancement of the cog, it was until the 14th century where it reached it’s limits and people thought that a new and improved ship should be invented. The replacement for this ship was the hulk, it was already invented but it needed some replacements.

How fast would a medieval cog sail?

So, a 50′ cog’s hull speed is 9.4 knots, for an average speed of around 5 knots. A 75′ cog’s hull speed is 11.6 knots, or an average speed around 6 knots. A 100′ cog’s hull speed is 13.4 knots, or around 7 knots average.

How many men can a cog carry?

A cog was about 40 feet long and 20 feet wide and the deck came about ten feet out of the water. It could carry 40 tons of cargo. A cog required at least four crew members to man the vessel at all times and could carry a compliment of 20 crew and passengers.

How fast is a cog ship?

Carracks for exploration like the Santa Maria or de Gama’s San Gabriel were small, about 90 tons; but merchant ships would average 250-500 tons with a crew of 40-80 and some war ships went up to 1000 tons. The average speed was about 80 miles/day and the trip to India took 6 to 8 months each way.

How long was a medieval ship?

They were usually small vessels of 40–60 long tons (45–67 short tons; 41–61 t) but larger vessels of up to 120 long tons (130 short tons; 120 t) are recorded.

What was the fastest medieval ship?

As well as a fast hull, a clipper carried a large sail area – by the standards of any other type of sailing ship, a clipper was greatly over-canvassed.

How far can a galleon sail in a day?

With an average distance of approximately 3,000 miles, this equates to a range of about 100 to 140 miles per day, or an average speed over the ground of about 4 to 6 knots.

How many soldiers could a medieval ship carry?

Baltic sea ships tended to be on the smaller side, and North sea trade ships could have up to about 20 crew. Typical tonnage was about 8 – 30 tons, with single ships of up to 150 tons excavated. They also tended to be very much more plain than warships or the ships that were used to bury important people in.