USS Observer ( AMc - 91 ) USS " Observer " ( AMc - 91 ) was an " Accentor " - class coastal minesweeper acquired by the U . S . Navy for the dangerous task of removing mines from minefields laid in the water to prevent ships from passing . " Observer " was laid down 6 September 1941 by F . L . Fulton Co . , Antioch , California , launched 15 January 1942 sponsored by Mrs . E . Stamm and placed in service 14 April 1942 . " Observer " was assigned to the 12th Naval District and was homeported at San Francisco , California . She operated out of this port until taken out of service 10 December 1945 . She was stricken 8 May 1946 and transferred to the Maritime Commission 21 August 1947 . USS Observer ( AMc - 91 ) was an Accentor - class coastal minesweeper acquired by the U . S . Navy for the dangerous task of removing mines from minefields laid in the water to prevent ships from passing . See also . Observer was laid down 6 September 1941 by F . L . Fulton Co . , Antioch , California , launched 15 January 1942 sponsored by Mrs . E . Stamm and placed in service 14 April 1942 . Observer was assigned to the 12th Naval District and was homeported at San Francisco , California . She operated out of this port until taken out of service 10 December 1945 . She was stricken 8 May 1946 and transferred to the Maritime Commission 21 August 1947 . In 1950 ' s She was purchased by the Krieger Family and used as the family ' s private yacht . Douglas Oil acquired her in the 60 ' s as part of the purchase of Krieger Oil . She was found tied to a dock in the early 1980s by another Alaskan charter company and refitted as a charter vessel that was pivotal in moving forward legislation to protect the Tongass National Forest . They decided to refit another minesweeper that accommodated twice the passengers . The ship was purchased in 2003 by a Southeast Alaska small ship cruising company and sails under the name Sea Wolf . In her history she has traveled from Alaska to the Galapagos and is currently in use exploring the Inside Passage wilderness waters from Glacier Bay , Alaska to the San Juan Islands . References . USS Observer ( AMc - 91 ) was an Accentor - class coastal minesweeper acquired by the U . S . Navy for the dangerous task of removing mines from minefields laid in the water to prevent ships from passing . Observer was laid 6 September 1941 by F . L . Fulton Co . , Antioch , California , launched 15 January 1942 , sponsored by Mrs . E . Stamm , and placed in service 14 April 1942 . Observer was assigned to the 12th Naval District and homeported at San Francisco , California . She operated out of this port until taken out of service 10 December 1945 . She was stricken 8 May 1946 and transferred to the Maritime Commission 21 August 1947 . In the 1950s she was purchased by the Krieger Family and used as the family ' s private yacht . Douglas Oil acquired her in the 60 ' s as part of the purchase of Krieger Oil . She was found tied to a dock in the early 1980s by another Alaskan charter company and refitted as a charter vessel that was pivotal in promoting legislation to protect the Tongass National Forest . They decided to refit another minesweeper that accommodated twice the passengers . The ship was purchased in 2003 by a Southeast Alaska small ship cruising company and sails under the name Sea Wolf . In her history she has traveled from Alaska to the Galapagos and is currently in use exploring the Inside Passage wilderness waters from Glacier Bay , Alaska to the San Juan Islands .