so a smaller vessel must absorb a lot more energy to create speed then a larger one ie: sardine=tuna. The sardine is capable of the same speed as the tuna but cannot travel the distance the tuna can when the tuna is not in a can.Peregrine= chicken ,if the chicken is not protected it will probably be hit like a "Pinata".(this is a poor example). thank you ..the Zissou society.