The tidal range there is 3-4 meters, so they probably did a lot of the work at low tide (and calm weather).I am baffled how they could even build that thing. I would imagine during the calm season, u dont screw around, gotta get it done.
Get South Shields tide times
South Shields, South Tyneside tide times and tide charts, high tide and low tide times, fishing times, tide tables, weather forecasts surf reports and solunar charts for today.
www.tideschart.com