Anticipating the likely weather conditions was quite an artform in those days, long before any sort of satellite aid. I spent some time in the library of the UK Met Office looking at historic reports from ships which sailed in those waters and the best prospects looked like an area on the north coast of Java, near the town of Surabaya. This was the largest group we had ever arranged but with help from the new Apple desk-top computers the administration worked flawlessly and
