What were the major differences between these PHMYs (such as hull dimensions, power, performance, weight, layout, standard equipment)?
What were the major improvements and at what year did each occur?
What are the known problem areas with each vessel type?
Thanks for your help.
-Dick-
What were the major improvements and at what year did each occur?
What are the known problem areas with each vessel type?
Thanks for your help.
-Dick-
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