Have recently seen HMS Campbeltown departing fresh from her Scottish refit. She is now sporting two great strakes along the hull similar to those seen on the Batch III Type 42s. Is anyone able to say what they are for. On the Type 42s they were for strengthening the hull after Phalanx had been fitted in place of the boats. I served for a long time on the Batch II Type 22s but there never appeared to be problems with the hull - Is it something to do with age or the fact that the 4.5 was fitted on the Batch IIIs creating extra stress? Just seems a strange addition so late in her service life.