Boat Mooring__________________________________
Most boats can be secured to a dock using four lines. The bow and aft
spring lines cross over each other and are secured to individual dock
cleats or pilings. This ensures longer springs.
Fender
1
2 3 4
Typical Mooring Diagram
1) Stern Line 3) Forward Spring Line
2) Aft Spring Line 4) Bow Line
Dock Line Sizing_______________________________
Most dock lines today are made of nylon, either of twisted rope or
braided core and cover. The most often used material is nylon because
of its stretching abilities, absorbing shock loads. It is chafe resistant
for extended life periods, and is easier on bare hands.
The line’s size varies with the vessel. Normally a vessel in the 20’ to 40’
range will use 1/2” diameter nylon lines, while larger yachts would use
5/8” to 3/4” diameter nylon lines. Boats smaller than 20’ can often
get away with 3/8” nylon lines. Dock lines need to have the strength
to hold the vessel and have enough density to resist chafi ng. They
shouldn’t be so heavy as to lose their shock absorbing capabilities.
5-22
Chapter 5
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