Going deep - cavitation effects

[Takeda Shingen]

By modern standards, the WWII Silent Service was not really all that silent. Flow noise due to hydrodynamic drag was a major contributor to detection.

[Crosseye76]

500 feet should put you below the layer. Without VDS, you can be pretty noisy and a Surface ship won't be able to hear you, or Ping you.

I don't think SH3 has the layer, but I think I read somewhere on the forum that SH4 will have a basic one.

[Egan]

Originally Posted by Crosseye76

500 feet should put you below the layer. Without VDS, you can be pretty noisy and a Surface ship won't be able to hear you, or Ping you.

I don't think SH3 has the layer, but I think I read somewhere on the forum that SH4 will have a basic one.

Much more importantly, 500 feet is going to put you under the silt in all those shallow seas.....

[Takeda Shingen]

Originally Posted by Crosseye76

500 feet should put you below the layer. Without VDS, you can be pretty noisy and a Surface ship won't be able to hear you, or Ping you.

I don't think SH3 has the layer, but I think I read somewhere on the forum that SH4 will have a basic one.

SH3 does not have layers modeled. However, depending on the sea state, climate, current, time of year, or any number of other conditions, you can have a very deep thermal boundry, sometimes in the neighborhood of 1000 feet. In some cases, you just can't be under the layer.