Dotted Lines around some ships?

Popeye the Sailorman · 09-08-07, 10:43 AM

1 SEP 42, departing La Spezia, Italy. 'Oh-Dark-Hundred'. I am following a ship out of the harbor, surfaced. On the Nav Chart I see several vessels around. When I left click on each, some of them have a 'dotted' [dashed?] circle around them, some distance out, except for a smaller pie shaped sector. That must mean something...

But what...please ? Their SONAR? I thought 'ASDIC' was a Brit invention... in those years.

P

09-08-07, 10:43 AM	#1
Popeye the Sailorman Swabbie Join Date: Jul 2007 Posts: 6 Downloads: 0 Uploads: 0	Dotted Lines around some ships? 1 SEP 42, departing La Spezia, Italy. 'Oh-Dark-Hundred'. I am following a ship out of the harbor, surfaced. On the Nav Chart I see several vessels around. When I left click on each, some of them have a 'dotted' [dashed?] circle around them, some distance out, except for a smaller pie shaped sector. That must mean something... But what...please ? Their SONAR? I thought 'ASDIC' was a Brit invention... in those years. P