Multiple Sonar Lines

Doenitz2008 · 03-02-11, 09:48 PM

How do you more experienced skippers do it ? I'm talking about a sonar only approach to a large formation. I'm trying to attack a large TF headed to Rabaul, July 1942. Conditions dictate sonar approach, with a few periscope peeks. I note that the only options really in terms of following a single contact are 1) follow nearest warship, or 2) follow nearest contact.

I'm trying to focus on a specific contact in order to determine speed. I'm finding this very difficult with 9 or 10 sonar lines extending out from my sub, some of which are only 2-3 degrees apart.

And - how accurate are the sonar lines for marking positions? I.E., my sonar man tells me merchant bearing 320. I ping at 320, get a range. When I use the compass to mark bearing and range, is the sonar line that extends from the sub a close enough indicator to the 320 mark ?

Thanks

PS: How do you read and interpret A-Scope radar ?

03-02-11, 09:48 PM	#1
Doenitz2008 Watch Join Date: Jan 2011 Posts: 29 Downloads: 29 Uploads: 0	Multiple Sonar Lines How do you more experienced skippers do it ? I'm talking about a sonar only approach to a large formation. I'm trying to attack a large TF headed to Rabaul, July 1942. Conditions dictate sonar approach, with a few periscope peeks. I note that the only options really in terms of following a single contact are 1) follow nearest warship, or 2) follow nearest contact. I'm trying to focus on a specific contact in order to determine speed. I'm finding this very difficult with 9 or 10 sonar lines extending out from my sub, some of which are only 2-3 degrees apart. And - how accurate are the sonar lines for marking positions? I.E., my sonar man tells me merchant bearing 320. I ping at 320, get a range. When I use the compass to mark bearing and range, is the sonar line that extends from the sub a close enough indicator to the 320 mark ? Thanks PS: How do you read and interpret A-Scope radar ? Last edited by Doenitz2008; 03-02-11 at 10:06 PM.