Anybody notice problem with S-Class Speeds?

[panthercules]

In doing some final testing on my Pitch Mod with the S-class boats, I thought at first I was having a problem with the mod's tweaks causing the sub to go too slow on the surface.

However, I deactivated my mod and experienced the same low speeds. Since I was building my mod on top of the ROW files as a base, I then went back to a pure stock 1.4 install and tried again, only to see the same speed problems.

In the game, I can only get the S-class boats up to 10 knots at flank speed, even in only 5 m/s winds/seas. However, several sources I found on the Web indicated that the top speed of the S class boats should be 14.5 knots. If that's correct, that means the game is almost 50% off in its speed settings for these subs. I've never really messed around with these boats, so I may have missed some posts about this, but is this something that has been discussed and fixed by some mods already? If so, I'd appreciate it if someone could post the fix here so I could incorporate it in my pitch mod. If not, I guess I'll just try experimenting till I find something that works.