I was looking at the Vosper Thornycroft Cerberus Corvette drawing. Shouldn't the pennant number be F, for Frigate (former escort destroyers, sloops and corvettes), rather than K, for Miscellaneous vessels (e.g., the seabed operations vessel HMS
Challenger or the helicopter support ship HMS Lofoten), under the post-1948 system?
Source:
http://en.wikipedia.org/wiki/Pennant_number