TW 2.2 & getting the most out of your u-boat

Der Teddy Bar · 10-02-06, 11:47 PM

The NYGM Anti Humming Bird Mod will cause your u-boat to react more realistically when at periscope depth and reflects the real world difficulties of maintaining a given depth when close to the surface due to wave action and currents.
When at periscope depth a u-boat would be set stern heavy as it was critical, that if the u-boat did breach the surface, that the propellers remained as deep as possible to give as much push to regain depth.

The u-boat’s overall buoyancy would also be set slightly negative so as to assist against breaching the surface either by heavy wave action or from possible trim imbalances when firing a salvo of torpedoes.

As a result of the NYGM Anti Humming Bird Mod, in heavy seas, i.e. high wind speeds, maintaining periscope depth is a little more tricky, just as it should be.
It is only when the wind speeds start getting up towards and into double figures does maintaining periscope depth without breaching the surface become a concern.

You will need to pay close attention to your speed as with your crew now having to constantly adjust the dive planes to keep you at periscope depth, you will find that this will result in a speed hit and as a result of this speed hit comes a greater difficulty in maintain periscope depth. A real catch 22!

The best way to deal with the realistic difficulties of maintaining periscope depth in heavy seas is when on approach to maintain a depth closer to 20 metres and when you want to use the periscope to order a depth, this depth will be from on the spot experience as the different wind speeds and the directions will effect the u-boat differently in each situation, that allows you to see while minimising the risk of breaching the surface.

Depending on the sea state i.e. the winds mps and how far away the escorts are, as well as their direction, you could risk increasing your speed to ahead 1/3 which will make the dive planes work more effectively.

Realistically under normal weather conditions if you order all stop you will not float to the surface and into the view of the escorts. However in heavy seas there is a risk that this might occur if at periscope depth but never from 15+ metres.

As a result of the removal of SHIII Humming Bird affect a close by depth charge will have a greater effect on your u-boats ability to maintain an even keel resulting in a change of depth as your crew work to level the u-boat out.

================================================== =======

The combination of the NYGM Anti Humming Bird Mod & the new NYGM Submerged Endurance Mod have resulted in the weather conditions having a larger impact upon your patrol!

All the u-boats in the NYGM TW 2.2 mod will in normal sea conditions do the historical distances. For example the VIIB in 0mps winds will at ahead slow (10 knots) will sail over 17,000 kilometres. Where as in 5mps winds at ahead slow you will only make 9 knots and as a result will sail only 15,000+ kilometres.

As demonstrated above as the wind speeds increase your given speed for the ordered speed will drop and as a result you maximum distance will also be effected and is a great real world result.

You will now you will have to ensure that you have a small reserve to make it home in case the weather turns bad!

I hope that this assists you to be more successful

SimNut · 10-03-06, 02:06 AM

Quote:

Originally Posted by Der Teddy Bar

As a result of the NYGM Anti Humming Bird Mod, in heavy seas, i.e. high wind speeds, maintaining periscope depth is a little more tricky, just as it should be.

You will need to pay close attention to your speed as with your crew now having to constantly adjust the dive planes to keep you at periscope depth, you will find that this will result in a speed hit and as a result of this speed hit comes a greater difficulty in maintain periscope depth. A real catch 22!

Wow, why?

I bought the game to be Captain. So if I order periscope depth, I expect the crew to do what is needed to follow the order, without me having to micromanage all of the other controls. I have plenty of other stuff going on in the boat without having to carry out my own orders.

LaikaFatBum · 10-03-06, 02:21 AM

Quote:

Originally Posted by SimNut

Quote:

Originally Posted by Der Teddy Bar

As a result of the NYGM Anti Humming Bird Mod, in heavy seas, i.e. high wind speeds, maintaining periscope depth is a little more tricky, just as it should be.

You will need to pay close attention to your speed as with your crew now having to constantly adjust the dive planes to keep you at periscope depth, you will find that this will result in a speed hit and as a result of this speed hit comes a greater difficulty in maintain periscope depth. A real catch 22!

Wow, why?

I bought the game to be Captain. So if I order periscope depth, I expect the crew to do what is needed to follow the order, without me having to micromanage all of the other controls. I have plenty of other stuff going on in the boat without having to carry out my own orders.

I think he means if you order speed then OK, you know, order knots speed. When order ahead slow then it does not go on knots speed but value of maximum as it is always been. So if waves big then it might be slower than when waves small.

This has always been.

Der Teddy Bar · 10-03-06, 02:58 AM

SimNut,
LaikaFatBum is on the right track. The ordered speed is specified in the NSS_UboatName.cfg under [EngineProperties] and is a % value of the maximum speed of Ahead Flank.

If submerged at ahead slow in 5mps winds you travel at 2knots then at 15 mps that may result in a speed of 1+ knots. This is the way that all ships work in the real world.

To over come this Captains will order either a certain RPM to achieve a known speed or specify the knot speed.

It is only the speed that you need to adjust which is not an issue and your crew will do the rest such as maintain periscope depth with out any further input.

I hope this helps you understand the system better.

redleaf · 10-03-06, 05:55 AM

Quote:

Originally Posted by Der Teddy Bar

SimNut,

If submerged at ahead slow in 5mps winds you travel at 2knots then at 15 mps that may result in a speed of 1+ knots. This is the way that all ships work in the real world.

To over come this Captains will order either a certain RPM to achieve a known speed or specify the knot speed.

I hope this helps you understand the system better.

I'm assuming this is only for persicope depth (and less)? I wouldn't see the wind speed having an effect on a sub deeper than that - so is this the case?

Cheers,
red

Der Teddy Bar · 10-03-06, 06:15 AM

Quote:

Originally Posted by redleaf

Quote:

Originally Posted by Der Teddy Bar

SimNut,

If submerged at ahead slow in 5mps winds you travel at 2knots then at 15 mps that may result in a speed of 1+ knots. This is the way that all ships work in the real world.

To over come this Captains will order either a certain RPM to achieve a known speed or specify the knot speed.

I hope this helps you understand the system better.

I'm assuming this is only for persicope depth (and less)? I wouldn't see the wind speed having an effect on a sub deeper than that - so is this the case?

Cheers,
red

It is only at periscope depth and not always. Also, as soon as you hit 20 metres any effect is immediately gone.

It is my understanding that in the real world the wave action as far as rocking is concerned could be felt as deep as 35+ metres.

10-02-06, 11:47 PM	#1
Der Teddy Bar Blade Master Join Date: Jan 2002 Posts: 1,388 Downloads: 0 Uploads: 0	TW 2.2 & getting the most out of your u-boat The NYGM Anti Humming Bird Mod will cause your u-boat to react more realistically when at periscope depth and reflects the real world difficulties of maintaining a given depth when close to the surface due to wave action and currents. When at periscope depth a u-boat would be set stern heavy as it was critical, that if the u-boat did breach the surface, that the propellers remained as deep as possible to give as much push to regain depth. The u-boat’s overall buoyancy would also be set slightly negative so as to assist against breaching the surface either by heavy wave action or from possible trim imbalances when firing a salvo of torpedoes. As a result of the NYGM Anti Humming Bird Mod, in heavy seas, i.e. high wind speeds, maintaining periscope depth is a little more tricky, just as it should be. It is only when the wind speeds start getting up towards and into double figures does maintaining periscope depth without breaching the surface become a concern. You will need to pay close attention to your speed as with your crew now having to constantly adjust the dive planes to keep you at periscope depth, you will find that this will result in a speed hit and as a result of this speed hit comes a greater difficulty in maintain periscope depth. A real catch 22! The best way to deal with the realistic difficulties of maintaining periscope depth in heavy seas is when on approach to maintain a depth closer to 20 metres and when you want to use the periscope to order a depth, this depth will be from on the spot experience as the different wind speeds and the directions will effect the u-boat differently in each situation, that allows you to see while minimising the risk of breaching the surface. Depending on the sea state i.e. the winds mps and how far away the escorts are, as well as their direction, you could risk increasing your speed to ahead 1/3 which will make the dive planes work more effectively. Realistically under normal weather conditions if you order all stop you will not float to the surface and into the view of the escorts. However in heavy seas there is a risk that this might occur if at periscope depth but never from 15+ metres. As a result of the removal of SHIII Humming Bird affect a close by depth charge will have a greater effect on your u-boats ability to maintain an even keel resulting in a change of depth as your crew work to level the u-boat out. ================================================== ======= The combination of the NYGM Anti Humming Bird Mod & the new NYGM Submerged Endurance Mod have resulted in the weather conditions having a larger impact upon your patrol! All the u-boats in the NYGM TW 2.2 mod will in normal sea conditions do the historical distances. For example the VIIB in 0mps winds will at ahead slow (10 knots) will sail over 17,000 kilometres. Where as in 5mps winds at ahead slow you will only make 9 knots and as a result will sail only 15,000+ kilometres. As demonstrated above as the wind speeds increase your given speed for the ordered speed will drop and as a result you maximum distance will also be effected and is a great real world result. You will now you will have to ensure that you have a small reserve to make it home in case the weather turns bad! I hope that this assists you to be more successful

10-03-06, 02:58 AM	#4
Der Teddy Bar Blade Master Join Date: Jan 2002 Posts: 1,388 Downloads: 0 Uploads: 0	SimNut, LaikaFatBum is on the right track. The ordered speed is specified in the NSS_UboatName.cfg under [EngineProperties] and is a % value of the maximum speed of Ahead Flank. If submerged at ahead slow in 5mps winds you travel at 2knots then at 15 mps that may result in a speed of 1+ knots. This is the way that all ships work in the real world. To over come this Captains will order either a certain RPM to achieve a known speed or specify the knot speed. It is only the speed that you need to adjust which is not an issue and your crew will do the rest such as maintain periscope depth with out any further input. I hope this helps you understand the system better.