Lec 03 - Effect of change of density on ship's trim | Variation in water density | Gulf of Alaska. 

In this session, we will understand how exactly a change of water density affects a ship's longitudinal stability.
Whenever a ship moves from water of one density to another without there being a change in its displacement, there may occur a change in trim along with a change in the mean draft.
However, this change in trim is quite small.