Alarming footage has emerged of the moment a crew of fishermen were saved from treacherous seas less than a minute before their boat sank.
Five men had to leap from their 79ft trawler which slipped beneath the waves in a matter of seconds.
Dramatic video shows the boat taking on so much water that one end sank below the surface, forcing those on board to jump into the sea.
The RNLI rescue crew hoisted the men aboard their vessel from the water as waves crashed against the side of the boat in challenging conditions, before taking them back to shore.
A lifeboat from Lerwick and the Coastguard helicopter were sent to help the Lerwick-registered Ocean Way, which reported taking on water at 6.50am off the Shetland Islands. They arrived a little over an hour later, and were forced into action straight away.
Alan Tarby, coxswain of the Lerwick lifeboat, said. "Just as we got along, the boat started to sink and the boys all jumped off the boat into the water alongside the lifeboat and we sort of fished them into the boat and hoisted them aboard.
"The final moments of the boat were of it sticking out the water. It slid into the water so quickly.
“It went down within seconds - it was less than a minute from when they decided to jump to when she disappeared."
Mark Rodaway, commander for the UK Coastguard, said: “This was a difficult rescue in awful weather.
“The lifeboat was finding it hard to get alongside. But I'm pleased to say that all five fishermen were rescued."
A Marine Accident Investigation Branch (MAIB) investigation is underway.