With light to moderate breezes anticipated for much of this year’s Volvo Dun Laoghaire Regatta 2017 which starts tomorrow afternoon, savvy sailors will be cognisant that the Full Moon, which occurs early in the morning of Sunday July 9th, will be playing a role in their activities writes W M Nixon.
A Full Moon means we’re into the rising cycle towards Spring Tides, but fortunately most of the regatta will be taking place in relatively modest tidal ranges. Thus High Water at 1249hrs on Sunday July 9th has risen to just 3.70 metres, and it’s less on all the preceding four days.
However, were the Regatta a fortnight later on July 23rd with the New Moon on Sunday July 23rd, High Water would be pushing towards 4.25 metres, which would certainly make for sporty tides.
But as it is, clued-in competitors will realise that during the progress of this event, tides are going to be that little bit stronger with each succeeding day, and will adapt their tactics accordingly. And in this age of computer analysis of just about everything, Dublin Port Company have produced this very useful live chart of tidal activity in Dublin Bay.
Even if you’re not going racing, it makes for fascinating viewing.
HW Thursday is 1058hrs, Height 3.63 metres. Friday: 1139hrs, 3.66m. Saturday 1200hrs, 3.68m. Sunday 1249hrs, 3.70m.