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COXN RECERT
Stability
12
Other
Not Applicable
12/02/2016

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Cards

Term
Stability
Definition
The ability of a vessel to return to an upright position after being heeled over.
Term
Buoyancy
Definition
The upwards force of water displaced by the hull.
Term
Righting Moment
Definition
Is the force causing a vessel to react against the roll and return to an even keel.
Term
Set
Definition
The direction of forces (winds, currents and sea conditions.)
Term
Drift
Definition
Is defined as the strength of set expressed in knots.
Term
Ebb Current
Definition
The horizontal motion of water away from land.
Term
Flood
Definition
the horizontal motion of water toward land.
Term
Running with the current
Definition
a vessel lacks manvuerablilty unless there is suffinefent amounts of water running through the rudders.
Term
Cavitation
Definition
usually occurs when the propeller rotates at a very high rate of speed and a partial vacuum forms air bubbles at the tips of the prop blades.
Term
Two Primary Forces that effect stability
Definition
Gravity and buoyancy are the two primary forces that affect stability . Gravity pushes the vessel down into the water. While buoyancy is force that pushes up from the water keeping the vessel afloat.
Term
Static forces
Definition
are caused by placement of weight within the hull of the vessel. Adding weight on one side or the other of the boats centerline or above its center of gravity usually reduces its stability.
Term
Dynamic Forces
Definition
external forces that affect stability. example wind waves, current.
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