52 Sedan Bridge
(525 Sedan Bridge)
3.12
S
ECTION
3 • U
SING
Y
OUR
B
OAT
D. S
ETTING
A
NCHOR
•
There is no best way to set an anchor.
Experiment to see how your anchor performs.
C. L
OWERING
A
NCHOR
•
Be sure there is adequate rode.
•
Secure rode to both the anchor and the boat.
•
Stop completely before lowering anchor.
•
If using windlass, refer to windlass operator’s
manual.
•
Keep feet clear of coiled line.
•
Turn on anchor light at night and in reduced visibility.
T
RIPLINE
A
RRANGEMENT
(F
IG
. 3.12.2)
A
NCHORING
(F
IG
. 3.12.1)
BOW
HEIGHT
WATER
DEPTH
ANCHOR
RODE
➤
➤
➤
➤
FLOAT
TRIPLINE
RODE
Rode Length = (Bow Water Depth) x Scope
•
Scope depends on the type of anchor, bottom,
tide, wind and sea conditions.
•
Minimum is 5:1 for calm conditions; norm is 7:1;
severe conditions may require 10:1.
Example:
Rode Length = (3 feet + 10 feet) x 7*
Rode Length = 13 feet x 7*
Rode Length = 91 feet
* Scope factor may range from 5 to 10 or
more. Less than 5, the anchor breaks out
too easily.
The scope is technically defined as the ratio of the
rode length to the vertical distance from the bow to
the sea floor. Since you want to know how much
rode to use when anchoring, the formula is:
Scope =
Rode Length
Bow Water Depth
NOTICE
Use the safety hook supplied to ensure that the
anchor is held in place should the windlass fail. Do
not use the safety hook to support the anchor in a
stored position. The windlass should always support
the anchor and ensure that it is held in the roller device
securely.
