White fish are further sub-divided into: 1  Round White Fish. Examples include cod, haddock, hake and pollock. 2  Flat White Fish. Examples include plaice, lemon sole, brill, turbot, black sole are common examples of this category. 3  Cartilaginous Fish. Ray, rock salmon and shark are examples.
In just three years, a solar sail could reach a speed of over 160,000 kilometers per hour (100,000 miles per hour). At that speed you could reach Pluto in less than five years. photon reflecting off the mirror-like surface of a solar sail gives the sail a double kick -- a push equal to twice the photon's momentum (one push from the sail stopping the photon and one from it reflecting the photon and accelerating it away).
Triremes were faster than sails-only ships, with a battle-speed in calm sea of about 10 km/h. Triremes were not so good in rough seas though. Before rowing out to battle, a trireme's crew dumped much of the gear on shore-including the sail. This saved weight so the ship went faster.