"The final shot was a very sad one indeed, Berserk slowly sinking below the cold waves whilst the crew looked on from the rescue boat. A very sad end to a very plucky yacht......"VAGB
The book is available here: Berserk: My Voyage to the Antarctic in a Twenty-Seven-Foot Sailboat
After the sinking of Berserk they decided to upgrade and double the length of their boat. They no longer sailed an Albin Vega. They attacked the Northwest Passage and then back to Antarctica.
Some good news:
The yacht Berserk is still missing, but the captain and one of the crew is reported alive and well.