a culverin
it's the same word on land, over water , maybe in air.
Francisco Pizarro's ship was called the San Antonio. It was one of the vessels he used during his expeditions to conquer the Inca Empire in the 16th century. Pizarro's maritime voyages were crucial in establishing Spanish control over Peru.
It was rainy a not very nice weather and it was very cold most of the time they were wooden ships
The ship had a cannon mounted on its side.
The slave-trade cycle that was initiated by ship owners was known as The Atlantic Slave Trade. The Atlantic Slave Trade lasted from the 16th century to the 19th century.
Broadside were a feature of 17th and 18 century naval battles. This was when all cannon on one side of the ship were fired at once.
A 40 cannon ship will have 20 cannons on both sides in order to keep the ship protected on all side.
The ship you are looking for might be the Mary Rose, of the English Navy in the 16th Century. The Mary Rose may not have been called a ship-of-the-line, but for all intent and purpose that is what she was.
Ships in the 16th century were mainly Carvels and Carracks and the average length was around 20 to 30 metres (70 to 100 feet). There were a few bigger ships built, but they were not very stable, ie The Mary Rose. It was not until the introduction of the Galleon in the mid 16th century that ship size began to increase.
No old Iron sides was a ship used in the war of 1812. A British cannon ball hit the side of the ship on freshly cut replacement board. The board was strong enough to with hold the shock of the cannon ball. A sailor on the that ship called her "old Iron sides" from then on.
Caravel
Broadside means the side of a ship where all the cannons and are. Broadside can also refer to the side of a ship that is above water. When a ship lets loose all cannon power, the ship receiving the blow is said to be broadsided.