The drawing is not to scale. All measurements are in mm. The key measurements are:
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1 |
Horizontal distance from the keel to the centre of the installation trunk: As short a possible |
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2 |
Height from the bottom of keel to the top of the installation trunk: 1440 mm (Maximum) |
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3 |
Total height of the installation trunk (with optional blister): 970 mm (Minimum) |
The circular opening in the blister must have the same diameter as the inside diameter of the installation trunk.
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A |
Three or four knee-plates (stiffeners) must be welded to the frames or decks. Thickness: 10 mm (Minimum)
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B |
Deflection brackets must only be welded to the shell-plating. Thickness: 6 mm (Minimum)
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