Estimated ranges and speeds

Rangoon · 01-09-10, 04:36 PM

I've read some numbers about estimated ranges and speeds, but now I'm thinking there are some problems with the following ranges:

Short: 0-1km
Medium: 1-3km
Long: 3-15km (edit)

The problem is that my hydrophone operator is telling me a ship is medium range. But when I check through the periscope he is over 6km away - this is confirmed by asking the Weapons Officer. My range estimate from mast height was 6600 and his was 6400. The Hydrophone said Medium, so obviously this is more than a little bit off.

I'm using GWX 3.0. What are the real numbers? And/or are they different from Hydrophone vs. Visual? Or does it have to do with the efficiency in the Sonar/Radio room affecting accuracy?

Also, here are the speeds I saw:

Slow: 1-6kts
Medium: 7-14kts
Fast: 15-24kts
Very Fast: 25+kts

Sound about right?
Thanks!

01-09-10, 04:36 PM	#1
Rangoon A-ganger Join Date: Dec 2009 Posts: 72 Downloads: 16 Uploads: 0	Estimated ranges and speeds I've read some numbers about estimated ranges and speeds, but now I'm thinking there are some problems with the following ranges: Short: 0-1km Medium: 1-3km Long: 3-15km (edit) The problem is that my hydrophone operator is telling me a ship is medium range. But when I check through the periscope he is over 6km away - this is confirmed by asking the Weapons Officer. My range estimate from mast height was 6600 and his was 6400. The Hydrophone said Medium, so obviously this is more than a little bit off. I'm using GWX 3.0. What are the real numbers? And/or are they different from Hydrophone vs. Visual? Or does it have to do with the efficiency in the Sonar/Radio room affecting accuracy? Also, here are the speeds I saw: Slow: 1-6kts Medium: 7-14kts Fast: 15-24kts Very Fast: 25+kts Sound about right? Thanks! Last edited by Rangoon; 01-09-10 at 05:15 PM.