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Stability
The stability of a vessel refers to its ability to stay upright
in the water.
Many different things can affect the stability of a vessel and cause
it to capsize. However, these things can be controlled. A well-designed
vessel will not capsize even in the worst conditions if it is operated
properly.
Fishing vessel stability is a very complex subject. Some basic rules
are outlined below. For more detailed information consult a standard stability
text book.
Centre of Gravity ^
The
centre of gravity (G) is the point at which the whole weight of the vessel
can be said to act vertically downward. As a general rule, a lower
centre of gravity means a more stable vessel.
The
centre of gravity changes, depending on how weight is distributed in the
vessel. For example, a heavy load placed high on deck will produce a higher
centre of gravity and less stability than a load stored
below deck.
A
vessel with a high centre of gravity is "top heavy." If it lists
or heels to one side, the centre of gravity pushes down in the direction
of the list. The danger of capsizing is much greater.
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