SUBSIM Radio Room Forums - View Single Post - GWX & NYGM sub physics combined, some intresting results

Ducimus · 01-23-07, 03:03 AM

Well after more testing, im not sure if one was to call this trimmed down or broken. That funny feeling i got about that 220 mark was apparently well founded.

Here's what i found in regard to this.

If you dive to 220 meters, what happends is the boat gets trimmed down. You in action get true netural boyancy. If you have periscope depth in your config file set at 14 meters. thats exactly what you'll get when ordering periscope depth. Im pretty sure the positive rise near the surface is gone. (maybe ill go back and verify that)

Up until the 220 mark, the boat behaves as normal, except the positive boyancy will bring you all the way to the surface if you let it. But once you pass the 220 mark, im guessing the boat takes on a little bit of water that you can't see in the damage report screen. You seem to honestly and genuinly be trimmed down. So one could think of diving to 220 meters to get rid of the positive boyancy as a real god's honest trim dive. Pretty damn cool.

One small problem. You can't pump that water out. When on the surface again after divign to 220 to Trim the boat for a netural boyancy, your top surface speed will be reduced by about 3-4 kts. So in that part, Lehmann was partially correct.

I just wish i knew why 220 meters was a magical number to the game. I know in the past it was stated by DTB that the boats in SH3 do take on water, but a water leakage below a certain value isnt reported in the damage report screen.

So the one BIG drawback is the subs top surface speed is reduced by around 4 kts after doign a trim dive (220 + meters) . From a design standpoint, to put the subs top speed back to where it should be, it means increase the subs top speed in the sim file on the blind assumption that the player WILL do a trim dive. Likewise the player will know not to do a trim dive and have a 24-25 kt submarine. However, not going below 220 meters is going to rather hard to NOT do and expect to survive.

I think ill leave this open for discussion, im still collecting my thoughts. Not sure how i feel about it right now.

01-23-07, 03:03 AM	#25
Ducimus Rear Admiral Join Date: May 2005 Posts: 12,987 Downloads: 67 Uploads: 2	Well after more testing, im not sure if one was to call this trimmed down or broken. That funny feeling i got about that 220 mark was apparently well founded. Here's what i found in regard to this. If you dive to 220 meters, what happends is the boat gets trimmed down. You in action get true netural boyancy. If you have periscope depth in your config file set at 14 meters. thats exactly what you'll get when ordering periscope depth. Im pretty sure the positive rise near the surface is gone. (maybe ill go back and verify that) Up until the 220 mark, the boat behaves as normal, except the positive boyancy will bring you all the way to the surface if you let it. But once you pass the 220 mark, im guessing the boat takes on a little bit of water that you can't see in the damage report screen. You seem to honestly and genuinly be trimmed down. So one could think of diving to 220 meters to get rid of the positive boyancy as a real god's honest trim dive. Pretty damn cool. One small problem. You can't pump that water out. When on the surface again after divign to 220 to Trim the boat for a netural boyancy, your top surface speed will be reduced by about 3-4 kts. So in that part, Lehmann was partially correct. I just wish i knew why 220 meters was a magical number to the game. I know in the past it was stated by DTB that the boats in SH3 do take on water, but a water leakage below a certain value isnt reported in the damage report screen. So the one BIG drawback is the subs top surface speed is reduced by around 4 kts after doign a trim dive (220 + meters) . From a design standpoint, to put the subs top speed back to where it should be, it means increase the subs top speed in the sim file on the blind assumption that the player WILL do a trim dive. Likewise the player will know not to do a trim dive and have a 24-25 kt submarine. However, not going below 220 meters is going to rather hard to NOT do and expect to survive. I think ill leave this open for discussion, im still collecting my thoughts. Not sure how i feel about it right now.