[crater] As the eastern rim of Regnault lies across the rim of Volta, that eastern rim is somewhat less prominent than the western half. The rim has not been heavily eroded, although a small craterlet lies across the northern rim. Where it joins Stokes to the south, the rim has been straightened slightly, and ejecta lies across part of the ...
Found on
http://en.wikipedia.org/wiki/Regnault_(crater)

The Regnault was a French Lagrange Class submarine of 836 tons displacement launched in 1917. The Regnault was powered by two sets of Sulzer diesel engines providing a top speed of 10 knots surfaced and 5 knots submerged. She carried a complement of 47 and was armed with two 14 pdr guns and eight 17.7 inch torpedo tubes.
Found on
http://www.probertencyclopaedia.com/browse/RR.HTM
No exact match found.