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6-2
Waterproofing
gasket
Sealant
Figure 6-2 Laying the waterproofing gasket on the tank flange
3. Orient the bow mark (arrow) on the hull unit flange toward ship’s bow. (If the mark cannot
be perfectly oriented toward ship’s bow adjust heading after installation as shown in the
next chapter.)
Hull unit flange
Ship's
bow
Figure 6-3 Orienting hull unit flange toward ship’s bow
4. For the 1200 mm stroke hull unit, insert insulation gaskets in each of the 11 holes for stud
bolts on the tank flange. (Do this before setting the hull unit to the retraction tank.)
Insulation
gasket
Figure 6-4 Inserting insulation gasket in tank flange
5. Before setting the hull unit on top of the retraction tank, observe the following cautions:
• Clean the hull unit flange to make sure no foreign material has fallen into the retraction
tank.
• Confirm that waterproofing gasket is in place.