Sir, – The sad news of the recent death of John Lorimer, who found himself aged 19, under the keel of the Tirpitz some 76 years ago, has prompted me to recall the memorial event, staged at the X-Craft Monument at Kylesku Bridge on 22 September 2013, exactly 70 years after the great raid on the German battleship took place. The genesis of this ceremony stemmed from Commander William Sutherland, RN (rtd) and Jonathan Brett Young, RAN (rtd), who both live close to Lairg in Sutherland, some 50 miles from Loch Cairnbawn, where the X-Craft crews did their final training and departure to Norwegian wa…