Oh. I think it might have been Harpoon II. The screenshot at https://www.mobygames.com/game/dos/harpoon-ii/screenshots/gameShotId,271193/ https://www.mobygames.

Oh. I think it might have been Harpoon II. The screenshot at https://www.mobygames.com/game/dos/harpoon-ii/screenshots/gameShotId,271193/ https://www.mobygames.com/game/dos/harpoon-ii/screenshots/ga... looks like it might be what I remembered. I'll have a look. Thanks a lot! Edit: I'm now sure that's it. I even found a scan of the original gaming magazine (the German "PC Player") with the test I read back then.