A Question about GWX 3.0 Radio Messages

[BigWalleye]

Originally Posted by ParaHandy

Along similar lines, can someone advise me what the 6 digit grid references mean? For example BE2438 etc, as opposed to the AANN references.

The AANN map reference was actually AANNNN. The KM grid system went down two more levels. There are some posts around (and information at other sites) which will let you trace down to that level. Here's one: http://www.subsim.com/radioroom/showthread.php?t=124408.

The six-character grid reference gives you a lot less ocean to search.

Here's a draggable overlay that lets you see the six-character grid on the SH3 nav chart: http://www.subsim.com/radioroom/down...o=file&id=4196

[ParaHandy]

Originally Posted by reallydedpoet

Welcome to SUBSIM by the way

Thank you

Originally Posted by BigWalleye

The AANN map reference was actually AANNNN. The KM grid system went down two more levels. There are some posts around (and information at other sites) which will let you trace down to that level. Here's one: http://www.subsim.com/radioroom/showthread.php?t=124408.

The six-character grid reference gives you a lot less ocean to search.

Here's a draggable overlay that lets you see the six-character grid on the SH3 nav chart: http://www.subsim.com/radioroom/down...o=file&id=4196

Yeah, my mistake. I should have said what do the AANNNN references refer to as opposed to the AANN ones.

[Pisces]

The 2 letters stand for a particular rectangular area on the map/globe. Mostly in alphabetical order, but not completely sequential around the globe. The coverage of sea and coastline was guiding.

Then each number digit resemble a subdivision of the larger rectangle. Divide it up like a 3x3 telephone numberpad. 1 at the top-left, 9 at the bottom right. The number of the digit in the grid-reference determines which 'button' to consider. Then further sub-divide the button by 3x3. And take the next number digit in the grid-reference to narrow down to smaller area. And so on, and so on, until it is pinpointed sufficiently.

There should not ever be a 0 in that gridreference. But you'll eventually come a cross a gridreference in the game, either given by SH3 Commander as a patrol assignment, or by some radiomessage, of something like "BF10" or "AM10". You can ignore that. Or any patrol grid assignment really. Nobody will blame you if you ignore such orders.

[ParaHandy]

Originally Posted by Pisces

Then each number digit resemble a subdivision of the larger rectangle. Divide it up like a 3x3 telephone numberpad. 1 at the top-left, 9 at the bottom right. The number of the digit in the grid-reference determines which 'button' to consider. Then further sub-divide the button by 3x3. And take the next number digit in the grid-reference to narrow down to smaller area. And so on, and so on, until it is pinpointed sufficiently.

Thanks fella, this is the part that I really couldn't fathom out. So if it was for example BE2855, that would be slap bang in the middle of BE28? BE2899 would be south-east corner of BE28?

[Pisces]

Originally Posted by ParaHandy

Thanks fella, this is the part that I really couldn't fathom out. So if it was for example BE2855, that would be slap bang in the middle of BE28? BE2899 would be south-east corner of BE28?

Yup, you got it right. But do realize that some grids are quite irregular. The 3x3 doesn't always hold up. Some (the A- grids most notable) are 2x5 or 5x2 (and then one grid does contain a zero)

See this huge (4200x 3600-ish) patched screenshot of the map: (large download: 11MB compressed, 44 MB as a windows bitmap file.

http://ricojansen.nl/downloads/Grid_Area_Only.rar

[Tupolev]

You mean everyone isn't using the KM map that came with Aces of the Deep?

Or am I showing my age with that one?

T

[ParaHandy]

Originally Posted by Pisces

Yup, you got it right. But do realize that some grids are quite irregular. The 3x3 doesn't always hold up. Some (the A- grids most notable) are 2x5 or 5x2 (and then one grid does contain a zero)

See this huge (4200x 3600-ish) patched screenshot of the map: (large download: 11MB compressed, 44 MB as a windows bitmap file.

http://ricojansen.nl/downloads/Grid_Area_Only.rar

When I look at the stock navigation grid/map now, the AANN grid references even make sense. A genuine Eureka! moment. Thanks again.

McAfee didn't like that file for some reason....Can someone confirm that it's safe to download?