More than one technique has been used, to raise sunken ships. You can position another ship above the sunken ship and then simply attach a cable (or several cables) and winch it up. You can also attach large balloons to the ship and then inflate them from cans of compressed gas, and float the ship up. Sometimes divers remove pieces of a ship and carry the pieces away by hand; the ship can be reassembled (if that's what they want to do) from the pieces, in a ship yard.
If you are on the ship you just look at the GPS and plot the displayed coordinates on a chart. If you are not on the ship, You can call the ship by radio or satellite telephone and ask them or there are some companies that track ships on behalf of their owners, similar to how UPS tracks packages and trucks.
you get to a sunken ship in Pokemon sapphire by sure and dive
When air is pumped into a sunken ship, it acts as a floater. The air boosts the sunken ship's buoyancy and helps the trapped water to escape.
"The sunken ship sat on the bottom of the ocean."
the ocean
shipwreck, sunken ship
If you are talking about the treasure hunt starting at the sunken ship, it ends at the sunken ship. You have to go inside the ship and click on the treasure chest and there you have it, the treasure.
The divers were sure they had discovered sunken treasure from pirate ship.
No, it is a sunken military ship.
Lusitania was the name of the sunken ship.
A wreckage
madrigal
Wreck
the titanic