The Fujikawa Maru is the wreck most divers visit first, and for many it remains the favourite. This 6,938-ton armed cargo-passenger ship sits upright at 12–34 metres, its superstructure within easy reach of snorkellers while the lower holds descend to recreational limits. The ship went down on the first day of Operation Hailstone, and its holds were never emptied.
Hold 2 contains the partly disassembled fuselages of Mitsubishi Zero fighters — the propellers, engine cowlings, and wing sections still recognisable after eight decades underwater. Hold 3 carried spare aircraft engines, torpedoes, and mines, all still in place. The exterior of the ship is covered in some of the best hard and soft coral growth on any wreck in the lagoon — orange-and-purple gorgonian fans, black coral trees, and large sea anemones host an abundance of lionfish, nudibranchs, and the ubiquitous Chuuk pufferfish. The crow's nest, at around 9 metres, makes an excellent safety-stop perch and a natural home for schooling glassfish.