While walking along the shore at Portsmouth, I heard a deep rumble and looked out to see a boat coming in that was an interesting shape. My first assumption was that it was from the Second World War because of the high freeboard and the shape of the bow and, when I saw the shape of a large gun on the front this was confirmed. It was quite a chunky looking thing and, judging by the sound of the engine, I imagine it could probably achieve some speed.

This would have been an unusual thing if it was the only one but a while later, a second boat came by. A similar shape but a different paint job. When I was a kid, I had a toy Air Sea Rescue launch which I believe the RAF operated during the war to rescue downed crews. This was painted just like that, so I guess that is what it is. Again, a meaty sounding engine was within so it can, presumably, make good progress. Subsequently, I saw the docks over by HMS Warrior and there were three of these vessels tied up so I guess you can take rides on them when visiting the museum.