Built by Kawanishi Kokuki K. K. at Naruo. This flying boat was either model H6K-4 or H6K5.
Assigned to either that Yokusuka Kōkūtai or Yokohama Kōkūtai (more likely), operating from Tulagi Seaplane Base (Gavutu / Tanambogo).
On August 7, 1942 this flying boat was believed to be moored to mooring "M3" to the north of Tanambogo
Island. That morning, it was hit by US Navy aircraft, causing it to burn and sink.
Discovered by divers in the early 1990s. Rests on a silt bottom at 42m in broken condition. The wing is broken off and fuselage lying on its starboard side. Strusts that connected the wing to the fuselage are still partly intact.
Michael Mcfadyen adds:
"On 11 August 1992 I dived a Mavis that sat on the bottom at 42 metres with its wing broken off. From the tip of its nose to the tail, things to see include the cockpit, inside the fuselage, the wings and scattered bits and pieces like ammunition canisters. The visibility on this dive is not real good, probably only two to three metres. A lot of very fine silt covers the plane and it is very easily stirred up whereupon it can virtually totally block out all visibility. Extremely good buoyancy is required on this dive. When I dived it the viz was about two metres. Hence my problems in identifying the plane."
Kevin Denlay adds:
"[This] deepest one is not dived much anymore because it is often dark (i.e. no/low ambient light) and it is very silty."
Thanks to Ewan Stevenson, Kevin Denlay, Neil Yates (Tulagi Dive) and Howard Sawyer for additional information
Kawanishi H6K "Mavis" by Michael Mcfadyen
J-Aircraft Message Board "Mavis's off Tanambogo / Gavutu"
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January 9, 2018