Thread: Sonar and radar
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Old 02-21-17, 08:55 AM   #11
CapnScurvy
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Quote:
Originally Posted by Zero Niner View Post
Here's a weird "feature": I was surfaced, running at about 9 kts in a P=class. Then the sonarman calls out contacts and I see a few grey and blue lines. It was an enemy convoy, and I was still surfaced.
I'm no naval person but surely passive sonar doesn't work when surfaced?

I'm using GFO 1.1.
If the mod is designed correctly, there is no reason for a newer American sub to not detect a target while surfaced. Unlike the German U-Boat's, most later U.S. Fleetboats had their Sonar/Hydrophone equipment on the bottom of the hull:





The Germans (and the earlier American class subs) had their equipment on the deck....requiring the sub to be submerged in order to operate. Here's an S-Class subs Hydrophone receiver:




An early Porpoise Hydrophone receiver:




Later in the war, the Porpoise and other early sub classes got the hull mount versions, allowing surfaced reception. The only drawback was the already mentioned interference from the subs own speed that created issues for the equipment. A 9knt speed should not produce detection. However, a surfaced American sub, at the correct time period....at a lower speed, will work.

I'm planning on making sure the Sonar/Hydrophones work as expected for the different subs with the FOTRS Ultimate mod. I'm even going to add the ability to have an S-Class boat purchase, through an upgrade, a Hull Mount receiver...probably towards the later stages of the subs life cycle.
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Last edited by CapnScurvy; 02-21-17 at 09:03 AM.
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