Surface water temperature this year has been stubbornly low and last day in May has not yet reached 11 degrees.

Visibility start May was 8m or so but 30 May on Justicia was a respectable 13m

After a couple of really nice weeks weather around Easter the weather has been very unsettled.  5 – 10 day range forecast is optimistic.

Nice photo of one of the screws, not often dived at the stern, on RMS Justicia (70m), taken by Stewie Andrews, 30 May 15.