sounds like the stock game to me.
if you want all the goodies you have to download the mods.
Patch to version 1.4b and download and install GWX 2.1, also get SH3 commander.
the stock game is considered by many of us to be "u-boat school" ie. there is no real danger but you are learning many things you need to know in order to survive a few patrols with GWX 2.1
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