An Island Boatworks 65, the yard's largest, documented as Fishbone of Islamorada, Florida, until early 2022 and since then as Marsh Madness, an Atlantic Beach charter boat. As Fishbone she took the heaviest white marlin and second overall at the 2017 White Marlin Roundup in the Abacos; as Marsh Madness she weighed an 878 lb blue marlin at the 2025 Pirates Cove Billfish Tournament, the largest single payout of the week. At the 2026 Big Rock she released nine billfish and finished third in the overall billfish release.
Her story, name by name
- Until 2022
Fishbone
Reported · U.S. Coast Guard
- April 2017
Tournament
Inaugural White Marlin Roundup, Abaco Beach Resort, Bahamas, April 19–22, 2017: won the heaviest white marlin division with an 85 lb fish, the only qualifying white weighed, and released 12 more for second overall. Captain William Chapman.
Reported · marlinmag.com
- March 2019
Tournament
Inaugural Fish for Holly Sailfish Tournament, Islamorada, a one-day event: third of 56 boats with five sailfish released. Captain Billy Chapman.
Reported · marlinmag.com
- 2022 – present
Marsh MadnessCurrent
Confirmed · U.S. Coast Guard, cgmix.uscg.mil, reeltime.app
Renamed from Fishbone between the January and February 2022 Coast Guard files. Hailing port moved from Islamorada, FL to Atlantic Beach, NC. Official number (1164970) and HIN unchanged.
- August 2025
Tournament
Pirates Cove Billfish Tournament, Manteo, August 9–15, 2025: weighed an 878 lb blue marlin for the largest single payout of the week, $537,872.50, and finished second in points with 1,831. Captain Shane Brafford.
Reported · marlinmag.com
- June 2026
Tournament
Big Rock Blue Marlin Tournament, Morehead City: nine releases, six white marlin, two blue marlin and a sailfish, June 8-13; led the release division after day three and finished third in the Overall Billfish Release with 1,675 points; $67,575 on the money-winners list. Entered as a 65' Island Boatworks out of Atlantic Beach.
Confirmed · reeltime.app, carolinacoastonline.com
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