How big is a sea grid-square?

[Stewy1]

G'day guys,

Sorry to jimmy-in on your forum (DW player), I'm curious, how big is a sea grid square?

I'm reading Herbert Werner's Iron Coffins (great read, btw) and he mentions that U-boats were given a grid-square to patrol (like BE 81), how big were they?

I tried searching on the net, but couldn't find any info...

Are there links/maps that show those grid squares around the world?

Thanks guys - sorry if this has been covered already.
Stew

[kevinsue]

G'day guys,

Sorry to jimmy-in on your forum (DW player), I'm curious, how big is a sea grid square?

I'm reading Herbert Werner's Iron Coffins (great read, btw) and he mentions that U-boats were given a grid-square to patrol (like BE 81), how big were they?

I tried searching on the net, but couldn't find any info...

Are there links/maps that show those grid squares around the world?

Thanks guys - sorry if this has been covered already.
Stew

Not sure if this will help but here is the ingame grid map. Each grid area is broken down into smaller partitions to be able to have a four digit reference, e.g AM3987

Also check out Kartengruppe's homepage http://www.kartengruppe.it/. He has a lot of interesting charts etc relating to the WW2 era.:up:

http://www.subsim.com/radioroom/picture.php?albumid=951&pictureid=8253

[Aktungbby]

To give an idea of the size of those Großquadrate, the AC quadrant (area of the North Cape) had an edge size of 486 sea miles.
The Großquadrate were subdivided into nine quadrants in a 3-by-3 grid, labled from 1 to 9. In case of Großquadrat AC, each of those medium squares had an edge size of 162 sea miles. A position in one of the nine subdivisions of a Großquadrat was named with the name of the Großquadrat, followed with the number of the square. Each of the medium squares was again subdivided into 9 squares. With this, every Großquadrat was subdiveded into 81 smaller squares, which were labled from 11 to 99 – without the numbers containing a 0. To describe a postion within one of those smaller squares – which had an edge size of 54 sea miles - a two letter and two number code was needed. E.g. AC71 would describe a postion off the Norwegian North coast.http://www.german-navy.de/kriegsmarine/articles/feature6.html (http://www.german-navy.de/kriegsmarine/articles/feature6.html) http://www.german-navy.de/pics/articles/marinequadrat003.jpgEach of those 81 squares was again subdivided into 81 smaller squares, each covering a 6 x 6 sea mile....

[Stewy1]

Thanks for the great answers, guys - that's really interesting!

(and thanks for welcoming a DW player into your forum :yeah:)