In the course of the TV program, the interviewer asked
whether the submarine in question might have been the
missing K-XVII although the sabotage was alleged to have
taken place near the Fiji Islands. This speculation and
ensuing publicity provoked Hans C. Besançon Jr.,
the son of the commander of the lost boat and himself
a retired officer of The Royal Netherlands Navy, to undertake
a crusade to find his father’s resting place and
disprove the fabrications of his detractors. Hans Besançon
Jr. also agreed to assist in the production of this documentary.
Although the naval authorities declined to provide
financial backing for Besançon, they were able
to offer some useful information. In 1981 a treasure
diver from Singapore reported having found a sunken
Dutch submarine in the South Chinese Sea. Wrecks in
the area had become well known to local fishermen who
were attracted by the abundance of marine life around
the sunken ship, only to have their nets snagged on
underwater obstructions. Pursuing this lead Hans Besançon
contacted Mr. Michael Hatcher and in May 1982 they moored
over the wreck and send divers down. The divers reported
that the submarine had sunk deeply into the muddy bottom,
but they were able to recover the steering wheel from
the exposed bridge. When its serial number was checked
against naval records, the boat was positively identified
as K-XVII.
Yet there was still a mystery: why was the wreck lying
in that position? No information was available indicating
that there had been clashes between the enemies.
Nine years later, as a result of correspondence between
Besançon and the keeper of the Japanese naval
archives in Tokyo, Mr. N. Kitazawa, it became clear
that in the night of December 7th to December 8th the
minelayer Tatsumya Maru laid 456 mines across the route
later taken by K-XVII and also O-16 on their return
to Singapore. It should be noted that this action took
place before the war between Japan and the Western allies
was officially declared. Although in the Japanese archives
all documents seemed to have been lost, Mr Kitazawa
succeeded in tracing a book written by a Japanese reporter
describing the first episode of the war. This book included
an interview with the wartime commanding officer of
Tatsumya Maru, where the geographical position of the
starting point of that mine lay was stated. K-XVII's
wreck was lying some 800 meters to the east there off.
The facts were now known and the riddle of KXVII's disappearance
was solved.
The Tatsumiya Maru, on her way to the Southern end
of Tioman Island, where she was ordered to start her
mine lay, was intercepted by a flying boat of the Dutch
Navy. The ship made a 180 degrees change of course;
during daytime shadowed by that plane. Shortly before
nightfall the plane had to return to base and the minelayer
reversed to its original course and laid the mines some
20 miles northerly than originally planned. Next morning,
when on her way back to the Japanese base on the island
Hainan she was again spotted by a flying boat. No action
could be taken as the war had not been declared yet.
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