Welcome to the Thorfinn’s Dive Chronicles —

your premier source for the latest adventures, insights, and updates from the heart of Truk Lagoon. Whether you’re a seasoned diver, a history aficionado, or simply intrigued by the underwater world, this blog is your gateway to staying connected with the pulse of Truk Lagoon. Dive in with us as we explore the depths, share mesmerizing encounters, and bring the vibrant stories of the lagoon’s sunken treasures right to your screen. Stay tuned and dive deep into the wonders of Truk Lagoon, all from the comfort of the Thorfinn, your floating resort in the midst of history.

Kiyozumi Maru

The Kiyozumi Maru was built in 1934 by the Kawasaki Dockyard as a freighter with luxurious passenger accommodations. The Japanese Navy took control in November 1941 converting the Kiyozumi Maru to an armed merchant raider. Six inch guns, cannibalized from old cruisers, two twin torpedo launchers and various anti-aircraft machine guns were added. Her success…


Amagisan Maru

The Amagisan Maru was originally built as a cargo/passenger ship serving the Japan-New York Line. The Japanese Navy took her over in 1943 for use as a special transport. In February 1942, she was torpedoed by the USS Swordfish near Davao sustaining damages she went over to repair at Rabaul. She was later one of…


Fujikawa Maru

The Fujikawa Maru was built in 1938 by the Mitsubishi Company as passenger/cargo carrier for the Toyo Kaiun Line. Her peacetime duties consisted of carrying raw silk and cotton between South America and India. The Japanese Navy took control in December 1940 converting her to an aircraft ferry. As part of her conversion she was…


Fujisan Maru

The Fujisan Maru was built in 1931 by the Harima Dockyard as an oil tanker for the Iino-Kaiun Line. Her peacetime duties consisted of carrying crude oil from the US to Japan. The Japanese Navy took control of her in late 1941 to utilize as a “Fleet Oiler.” She participated as part of the Aleutian…