機密
(3) East Sector Victoria Basin to
extremity 22nm
(4) North Sector - Victoria Basin to
extremity 40nm
In peacetime it is necessary to maintain a minimum of one vessel at 2 hours notice (but normally on patrol) and 1 vessel at 4 hours notice alongside throughout the whole of the patrol area. In times of tension it is necessary to maintain 4 vessels on patrol in order to give physical support to the Marine Police throughout the patrol sectors within one hour.
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(b) Availability. It is not possible to define this precisely until the vessel is selected, but the following is an estimated pattern for craft of this type:
(1) Refits of 6 week duration with 104 weeks
between the end of one and the start of the next.
(2)
(3)
A 'docking and essential defects' period of 3 weeks, with 33 weeks intervening.
A ship's staff maintenance period of 1 day per week.
These figures give a 72% availability rate which means that to ensure that 4 vessels are available for deployment in time of tension 5.55 craft will be required. This can be reduced to 4.65 by adjusting or deferring the ships staff maintenance day in period of tension to increase the availability rate to 86%.
The study therefore concluded that, unless the current operational pattern is altered, 5 craft will be required.
Communications Study
7. A system similar to that used in comparable UK based patrol craft is planned with certain modifications to meet local requirements. The present net, based on obsolescent insecure equipment will be replaced by one which is fully secure. This will also entail some changes to shore based equipment.
Weapons Study
8. Two alternative gun systems are under consideration.
/A choice....
CONFIDENTIAL **