Well, that's almost true. When the oilfield essentially shut down circa 1986, the GLOMAR GRAND ISLE was approaching 20 years old, and was terribly under-sized for modern drilling requirements. We let her go up for auction, and she was bought by All Alaskan Fisheries. They renamed her ALASKAN GRAND ISLE, not as rendered in her documents.
The Pacific Northwest fishing industry had made use of good surplus oilfield equipment in the past, and one the size of GRAND ISLE was the next step. She was in Singapore when purchased, and there they removed her drilling equipment and I'm told they even added refrigeration equipment below decks. They towed her to Seattle, but then a recession also hit the fishing industry, and her conversion was never completed. She sat idle in Lake Union, Seattle area, for more than 10 years, and to my knowledge the only time she moved was to star in the movie "Free Willie 2" in which she was the naughty tanker DAKAR. In 2000 she was towed to China for scrap, with her house cut off, along with a barge carrying deckload of obsolete Seaspan tugs.

Strange as it may seem, she was converted into a fishing and fish processing vessel and renamed Alaskan Grand Isle in 1989. The IMO number is 6806999.