The Captain Dan was originally the U.S. Coast Guard buoy tender Hollyhock.  The Hollyhock class was a three-ship class designed as coast-wide tenders for use by the U.S. Lighthouse Service.  The first ship of the class, Hollyhock, was contracted in March 1936, launched on March 24, 1937, and commissioned on August 7, 1937.  Constructed by the Defoe Boat & Motor Works, Bay City, Michigan, Hollyhock was built to replace the aging U.S. Lighthouse Service Tender Sumac.  Hollyhock was first assigned to duty in the 12th Lighthouse District and was home-ported in Milwaukee, Wisconsin.  She was designated WAGL-220 at the start of World War II.  Hollyhock worked out of Detroit, Michigan, from 1959 to 1962 and Miami, Florida, from 1962 until she was decommissioned from the U.S. Coast Guard on March 31, 1982.  Thereafter the Hollyhock was purchased by a missionary and renamed to the Good News Missionship.  Due to mechanical problems the Good News Missionship became stranded in the Miami river and eventually abandoned.  The Pompano Beach Fishing Rodeo purchased the vessel for use as an artificial reef.  She was renamed the Captain Dan and sunk in 110 feet of water off Pompano Beach on February 20, 1990.  Vibrant growth covers the wreck, whose bow points north.