Vilun

The Vilun was a Japanese-built Thai submarine of 370 tons displacement launched in 1936. The Vilun had a top speed of 14.5 knots surfaced and 8 knots submerged. She carried a complement of 24 and was armed with one machine-gun and five 21 inch torpedo tubes.
Found on http://www.probertencyclopaedia.com/browse/RV.HTM
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