Figure 8-5. A. Types of hook bolts; B. Use of hook bolts in applying a patch.
Ordinary feather pillows have a tendency to ball
up when they are wet and do not provide a uniform
surface when used to patch holes. For this reason
some ships may fabricate pillows made of canvas and
You will frequently find it necessary to improvise
patches by using whatever material is handy. This
calls for skill and a certain amount of imagination.
Hinged or folding prefabricated patches are usually
THE T CAN BE FOLDED TO
the easiest to use, and, in many cases, they are the
GO THROUGH A SHELL HOLE
most effective. But if they are not available, you will
need to improvise patches.
Figure 8-7. Materials used in assembling a folding T patch.
What holes caused by battle damage should
be given priority when plugging is needed?
All large holes
All small holes
2 INCH X 4 INCH
Holes in the deck
Figure 8-6. One method of installing a folding T patch.
Holes at the waterline or on the low side