Storm conditions in the Barents Sea were forecast to abate somewhat in the next two days.
In the meantime, be sure to follow our live blog for immediate updates on storm conditions.
Weights substantially less than those needed for cubic blocks are adequate in the case of tetrapods in similar storm conditions.
The goal was to find out how much air and water leakage could be expected under storm conditions that could be expected at least once in 50 years.
It has been "fully winterised", according to the company's website, and built to withstand once-in-100-year Barents Sea storm conditions and ice.
"You can stay on site through many storm conditions, but in the worst cases you have to pull up the well.
But storm conditions ranging from hail and severe lightning to several feet of snow are forecast from Florida to New England.
Robert Scott's 1910 Terra Nova expedition also sailed through the treacherous Southern Ocean, leaving from New Zealand, and the great explorer wasn't immune to the storm conditions.
"Tropical storm conditions are expected to first reach the Florida west coast within the warning area later today, making outside preparations difficult or dangerous.
The storm conditions are continuing across the UK, with two people killed on Monday.
"Forecast high winds and storm conditions will impact on the normal scheduled sailings".
