Furuno CH-300 Installation Manual page 20

1. MOUNTING
• If the length of the retraction tank (Li) is more than 1 m, install at least one
reinforcement rib to prevent damage of the tank and vessel by sea accident.
One reinforcement rib should be installed toward the ship's bow (see the
figure below). It is recommended that four reinforcement ribs are installed.
• For the reinforcement ribs, fit doubling plates to the location where the
reinforcement ribs are welded to the bulkhead of the vessel (see the figure
below).
Retraction tank
Min. 200
1-12
Bow
(Unit: mm)
Doubling plate
Thickness: More than hull plate
Reinforcement rib
Min. 100
t
Thickness (t): More than hull plate