A daily record of a ships progress is kept in the ship's log, or logbook.
They aren’t kept secret.
they had no maps that show the world correctly, no navigation tools ad they had never traveled to Asia by sea.
The BILGE is next to the hull, i.e. nearly next to the sea below the ship. The bilge usually holds a nasty mixture of dirty water, oil, and cigarette ends, etc. The HOLD is where the cargo is kept in a ship, below the sea level. Those two would be the nearest equivalent to a basement in a ship.
The same that every other nation did when someone died on a ship: if he was an important person he would be kept in the freezer until he could be buried ashore; if he was a sailor, he would get a burial at sea.
The journal kept by the captain of a ship is called log.The Captain's Log, or ship's log, records observations and details of a journey or voyage.
a compass
A ship yard!
elevation maps are maps that show you the height of land above sea level
Ships are built in ship yards, on the land.
A submarine is a ship that can travel underwater.
The destruction of a ship at sea refers to what happens when an even damages a ship to the point that it is destroyed and sinks or capsizes. Tsunamis, explosions in the ship (such as fuel-related explosions), and collisions are a few of the problems that can cause the destruction of a ship at sea.