First boats included rafts, skin, hide and bark boats, kayaks and dugouts.
Mesopotamian sailors invent sails.
Archimedes (287 - 212 BCE) figures out the science of floatation.
Vikings invent clinker building.
The central rudder starts to replace the "steerboard".
Cornelis Drebble builds the first submarine from wood.
Marquis d'Abbans (1751 - 1832) builds the first steamboat.
Steamboat SS Savannah crosses the Atlantic in a record of 29 days.
Modern propellers are invented (independently) by Francis Pettit Smith (1808 - 1874) and John Ericsson (1803 - 1889)
Marine gas turbine engines are used for the first time.
Jacques Piccard and Lt. Don Walsh of the US Navy dive to around 11(km) (6 miles) in the deepest part of the oceans, the Mariana Trench.
Scripps Institution's Flip ship is first used to study the movement of ocean waves.