Gallons of radioactive water spilt

Yachtsmen going out to their boats in Devon’s River Tamar run the risk of rowing through radioactive water following the leak of 61 gallons of toxic coolant from a Royal Navy nuclear submarine.

The coolant was being drained from the nuclear submarine HMS Trafalgar’s reactor into a shore -based effluent tank at Devonport Naval Base when the drain hose burst.

The spillage contained tritium, a substance that can cause burns, cancer and DNA mutations as it breaks down.

It is the worst radioactive leak at a naval base for 23 years. A Royal Navy spokesman said the environmental risk is ‘negligible.’

The submarine is due to be decommissioned next year.