Most of us do a certain amount of entertaining in our own home, usually we hope with success. But have you noticed it's when you've specially prepared for that special guest that the trouble starts. It's always just as he knocks on the front door the electric bulb in the hall goes fut. Still you can laugh that off because you know you've taken the trouble to buy a bottle of his favourite whisky. And it's just as you're pouring him a large one he tells you he's gone off scotch and now only drinks gin. Which you haven't got. And finally, it's bound to be this particular evening that your small daughter chooses to lock herself in that particular room, which he wants to use, and refuses to come out until she's been told a story through the keyhole. By him. And today preparations for the entertainment of a special guest are taking place in the wardroom of H.M.S. Troutbridge.