hydrophone detecting at unrealistic range on the surface HELP

[avers]

hey guys, I just started using OTC 1.5 for RSRDC v502 and I loaded up a single mission and the info said the hydrophone could only hear to 10,000 yards, but the sound guy detected something at 9 miles. way over 10,000 yards. how do I fix this?

[Lexandro]

It would be a kinda crappy hydrophone if it only heard from 5 miles (10k yards). You can visually detect a ship at a longer range manually, and sound travels much further in water than your vision range.
The hydro is normally good to 20km in stock game (which is fairly realistic), so 9m= 14km which is a "nerf" over stock for the mod. But anyhoo all your sensors are adjustable in the "sensors" CFG file.

[swampy]

Install this mod : Travellermod 2.6

Then you have to be submerged to use the hydrophone

[merc4ulfate]

"Then you have to be submerged to use the hydrophone"

Even though the sonar manual at the time gave instructions on using the sonar on the surface. Having surface use was well within a submarines capabilities. There were three different sonar arrays on a WWII US submarine. Two could be used on the surface.

Chapter 5, page 38

"When your submarine surfaces, you will continue searching. While it is running at a slow speed, you will be able to listen efficiently."


http://www.hnsa.org/doc/fleetsub/sonar/index.htm


In the book, U.S. Submarines Through 1945: An Illustrated Design History, By Norman Friedman, page 198 states:

"Only in 1940-1941 did the U.S. Navy encounter British thin-steel domes, which made it possible to operate at about 15 kts."

This made it possible to use passive sonar to 15 kts.

By 1945 a single capital or merchant could be detected at 10,000 yards, a convoy at 15,000 and escorted capital ships at 20,000 yards.

This makes the idea of mods reducing passive sonar levels unrealistic.