So, following on from the tweets this morning after listening to Cape Talk 567, the Eihatsu Maru is still beached on Clifton 1st beach :(
So, when exactly is Spring tide and what is it?:
Range variation: springs and neaps
The semi-diurnal range (the difference in height between high and low waters over about half a day) varies in a two-week cycle.
Approximately twice a month, around new moon and full moon when the Sun, Moon and Earth form a line (a condition known as syzygy) the tidal force due to the sun reinforces that due to the Moon.
The tide's range is then at its maximum: this is called the spring tide, or just springs.
It is not named after the season but, like that word, derives from the meaning "jump, burst forth, rise", as in a natural spring.
So, when is the next Spring tide?
From the table below: at 02h45 in the morning of 20th May – it will be 1,58m (compared to the 1,28m yesterday at 12h04 Tues 15th May) – that’s an extra 30cm.
See forum here for nice pics (incl. pics of cable snapping again): http://www.flyafrica.info/forums/showthread.php?48730-Trawler-Eihatsu-Maru-aground-1st-Beach-Clifton/page2
Update on Fri 18th May: the trawler is now free! They managed to get it off the sand at about 15h35 on Fri afternoon :)