DHC-3T Otter N435B was one of three DHC-3T Turbo Otters flying for Key West Seaplane Adventures in May 2023. The aircraft mostly fly tourists between Key West Airport and Fort Jefferson and Dry Tortugas, 70 miles to the west. Otter msn 183 was delivered to the RCAF in Dec. 1956 as 3743 and served with 115 Air Transport Unit, a UN support unit based in Egypt between about 1955 and 1961. Retired by the RCAF in 1965, it became CF-WJB. Converted by Airtech Canada to a Pezetel 3S engine in 1980. For more history, see http://www.dhc-3archive.com/DHC-3_183.html

Seen moored at Dry Tortugas National Park, Florida. It operates as a tourist shuttle between Fort Jefferson and Key West.