Yes, but not always it is necessary.
If they take on water.
If the moon were to be destroyed there would still be tides. This would be because of the sun still being in assistance and affecting the tides.
the rise in water level allow big ships to enter or leave harbors safely.
Ships that go near Charybdis who is a sea monster are known to go into a huge whirlpool. Charybdis is a goddess of the tides with triple drawing expulsion.
Fisherman, ships's crew, bridge builders, lifeguard
No
Gravity pulls everything but water shows it. I am still looking for tides in a glass of water.
because the moon controls the tides and the moon will pull away from earth in a billion years so the tides will be extremely low and the ocean will look very still.
Anyone involved with ships on the sea. This would include fishermen, mariners, and ship repair personnel.
The weather had to be good. The tides had to be right for landing ships. The seas had to be fairly calm as many men embarked from large ships into small boats just offshore.
Oceanographers are scientists who study the tides. They record details such as the measurement of the heights, times and the extent of the rising and falling of tidal waters. This information is vital for the navigation of ships that rely on accurate data about the speed and direction of tidal currents.
The weather changed on the Spanish ships and blew them out to sea rather than towards land. The tides in that area also change and the ships didn't know about the current moving in the wrong direction.