Great pics, guys. Here's a recollection from a chap whom I was in letter (that dates it!) contact with many years back who served with Coastal Command with a Beaufighter squadron. He recounted aan incident of an attack on a hulk moored off the coast of Scotland for the purposes of firing practise:
"The three-inch rocket used by Coastal Command had a solid, non explosive armour-piercing head, which, according to the books should punch a six inch hole in a ship's side. When we rowed out to view the damage, we found the ship's plates were flared back like tin plate, leaving a diamond-shaped hole, through which a man could have wheeled a wheelbarrow. Furthermore, it had ploughed its way through angle-irons and girders inside the ship and out the other side! These rockets, if fired short, could travel underwater like a torpedo to give a "wet hit". They could also sometimes turn upwards and come out of the water again, so it was advised to move to one side after firing."