[Pippi]

Thanks v much for all your replies.  The article was very interesting and reassuring (thanks John and Finless for sending the link).

Andrew, thanks for the offer to dive the Bessel out of Littlehampton, but we are diving out of Brighton this weekend and then off to South China Sea to dive on the Prince of Wales and the Repulse in just over a week's time.  Otherwise the offer would be v tempting (especially as our present club doesn't do much below 40 m).  

Thanks again and happy diving!

P