My father Vic Webster and his twin brother Ron Webster both served on H.M.S. Sharpshooter together. Vic's service No was JX397458 I am unsure of Ron's at this time but will let you know if I find out. Vic and Ron joined together at Chatham 4th Jan 1943 and both joined the Sharpshooter on 29th April 1943 and remained with her until 2nd May 1946 as boatswains.  Being twins they used to get up to all sorts of mischief. Attached is a photo of them both ( Vic on the left ) somewhere in the Med Mark Webster, 28thJune 2005