How often do you use the hydrophone?

[4saken]

I mean when you are looking for targets.I have the 3 hours rule while i am on diesel engines (10-12 knots).I submerge to 15-18 meters,stay there for 3-4 minutes and then up again.

[Yoriyn]

It is a good rule, very productive. Unfortunatly not very realistic. I use MEPv3 mod that let me see 20km around my boat, it's more realistic then making hydrophone check every few hours.

I read somehere 25m depth is was optimal to hear sounds, but I don't know the game can reproduce this.

[Capt. Morgan]

Every 30 km, that being somewhere close to the maximum detection range of my sonar.

[desirableroasted]

Originally Posted by Yoriyn

It is a good rule, very productive. Unfortunatly not very realistic. I use MEPv3 mod that let me see 20km around my boat, it's more realistic then making hydrophone check every few hours.

I read somehere 25m depth is was optimal to hear sounds, but I don't know the game can reproduce this.

Well, 20km of vision is very unrealistic... the distance to the horizon is only about 10km from a VIIC conning tower. However, objects over the horizon can be seen, of course, but 20km is a lonnnng way.

The game doesn't worry about depth... once you are submerged, at any depth, your hydrophone man can do his stuff. The results are the same whether at 25 m in calm seas, or periscope depth in a storm.

[Yoriyn]

You right. you can't see a ship above 10km but smoke. So it is realistic.

[Pisces]

I did some calculations on this some time ago:

http://www.subsim.com/radioroom/show...7&postcount=27

[Capt. Morgan]

Originally Posted by Pisces

I did some calculations on this some time ago:

http://www.subsim.com/radioroom/show...7&postcount=27

Thank you

[desirableroasted]

Originally Posted by Pisces

I did some calculations on this some time ago:

http://www.subsim.com/radioroom/show...7&postcount=27

Most excellent!

[Sailor Steve]

Originally Posted by Yoriyn

You right. you can't see a ship above 10km but smoke. So it is realistic.

Not true. For a 2-meter tall man standing on a 2-meter platform, the horizon is only 8 km away. But if the ship he's looking for has a mast height of 30 meters then the lookout will be able to see the ship at a distance of 19 km. A battleship with a mast height of 60 meters will be visible at a distance of 26 km. And that's not smoke, that's the masthead.

[Matador.es]

Originally Posted by Sailor Steve

Not true. For a 2-meter tall man standing on a 2-meter platform, the horizon is only 8 km away. But if the ship he's looking for has a mast height of 30 meters then the lookout will be able to see the ship at a distance of 19 km. A battleship with a mast height of 60 meters will be visible at a distance of 26 km. And that's not smoke, that's the masthead.

True, especially in the mediteranian were visibility is double compared to the Atlantic in normal condition. But I. Any case, comparing to my own RL experience (on sailing yachts) one can see a ship @ 20 km in good weather conditions.