Unfortunately, I don´t have the instructions at hand right now, but the Seine is definitely a french design of 1937/8. Four ships were planned but only two were completed after WW2, entering civilian service. In 1961 they were renamed Seine and Saone and converted to fleet oilers, a role they fulfilled until the 1970s. Here is a french link with a few good photos:
http://www.netmarine.net/bat/pr/seine/index.htm
The Heller model is spot-on and I love the perfectly rendered full hull - something that the Revell T2 lacks... The kit is very detailed (dozens of individual winches) and builds up into a fine replica - the one seen on modelwarships.com is more or less OOB with photoetch railing and some other pe items added. An interesting feature is that the breakwater was added for the current release of the kit (as part of the "Task Force"-Set) - I had the old 70s kit and the deck was smooth with no breakwater! Heller seems to actually care to keep their molds "up to date" even if the subjects are long out of service.
What the kit needs are some photoetched doors- the superstructures are molded integrally with the decks (still, Heller is the only brand where you find molded-on superstructures that are perfectly 90° to the decks with not the slightest tapering) so they lack all the doors. Still, they found a convincing way to include open bridge windows. The 4cm single mount Bofors guns are very simplified but L Ársenal have the proper substitutes in preparation - these are the only issues I have with the kit and they are easily overcome.
Well worth building, even if the subject is a little obscure. Somewhere on the L Ársenal gallery there is a photo of a Heller model pre-dated to the civilian version - looks great, unfortunately I do not remember the name of the builder so you might have to do some digging...