How to convert short GPS coordinates please

 Hi guys. Forgive me I'm a bit of a novice with GPS coordinates.

I'm trying to put the Recfishwest FAD coordinates into my GPS combo and I must be doing it wrong as they come up well south of where they should be. When I put them in they come up west of Garden Island and I know they're further north of GI.

The Recfishwest coordinates read 32.113S 115.160E. So I'm entering it in my MFD as 32.11.300S 115.16.000. Clearly this is wrong. Can somebody please clarify where I'm going wrong please?

Thanks in advance.

 

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https://recfishwest.org.au/wp

Sat, 2019-12-21 11:23

https://recfishwest.org.au/wp-content/uploads/2019/11/PERTH-FAD-Coords-with-maps.pdf

Here is a link with fad coords in a couple of different formats.

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Wilfish's picture

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Date Joined: 01/10/19

 Ok thanks dodgy. That was

Sun, 2019-12-22 15:12

 Ok thanks dodgy. That was enlightening. At least I know mine reads in DDM now. Appreciate your comment mate. 

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Terry's picture

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Date Joined: 04/12/05

Try this

Sat, 2019-12-21 12:07

 https://www.latlong.net/lat-long-dms.html

Wilfish's picture

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Date Joined: 01/10/19

 Thanks for your reply lads

Sun, 2019-12-22 15:10

 Thanks for your reply lads I'll give that a shot. 

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dmck's picture

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You dont need an app.....

Mon, 2019-12-23 14:23

 just a calculator.

DDMMSS.ss

SS.ss /60 = .mmmm

MMSS.ss = MM+.mmmm

 

 

DDMM.mm

MM.mm/60=.dddd

DDMM.mm = DD+.dddd

 

 

 

.dddd * 60= MM.mmmm

 

.mmmm * 60 = SS.ssss

 

Dont get too hung up on the number of decimal places....

 

1minute of LAT = 1852 metres.

therfore 2 decimal  (MM.mm)places will get you to within 18.5 metres.

 

3 decimal places (MM.mmm) will get you to within 1.85 metres.... the width of your boat!!!

 

1 second is approx 3 metres!!

 

unless you are at the equator, LONGITUDE measurements will be smaller.

 

A pity that converting between DATUMs is not as simple.....

Wilfish's picture

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 Thanks dmck, certainly

Thu, 2020-01-16 19:29

 Thanks dmck, certainly sounds like you know what your talking about

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little johnny's picture

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Impressive

Thu, 2020-01-16 19:42

.

Chinbald's picture

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Agreed

Thu, 2020-01-16 20:22

My head is hurting trying to take that in. Never stop learning. 

deep south's picture

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You can

Fri, 2020-01-17 21:19

 Just go into your gps settings , find the co ord options , find the format you are trying to put in then once the spots have been saved in the unit just change back to the format you use

Did it years ago after getting some old king crab marks off the south coast fron an old bloke , worked a treat .

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Jackfrost80's picture

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Great advice!

Sat, 2020-01-18 10:10

Great advice!

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Google can also help

Sat, 2020-01-18 12:29

 Hi Wilfish

When on a trip I often use the method Deep South suggested, just changing the format settings on your GPS. However if at home,for a quick change via a computer, you can also just use Google Maps, which will accept the short decimal degrees format and then display the location  in both decimal degrees and the longer  degrees, minutes and seconds. For example, in the search box, if you put the FAD coordinates  as 32.113S 115.160E it will put a waypoint marker on the map and also dispaly the coordinates  in both formats  like ;

32°06'46.8"S 115°09'36.0"E and  -32.113000, 115.160000

It will work with both formats regardless of which one you enter, while also showing you a ballpark location of where the target, such as the FAD, is.

However Google maps lacks the third format of Degrees and Decimal Minutes. To use that one you can do it on a computer with Google Earth, which is a free but big download, or do as Deep South suggests  by changing the settings on your GPS back and forth.

 

 

 
sea-kem's picture

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 Awesome thread

Sat, 2020-01-18 12:51

 Awesome thread

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Wilfish's picture

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Date Joined: 01/10/19

Thanks to everyone that

Tue, 2020-01-21 15:02

Thanks to everyone that chimed in. There seems to be a few smart cookies amongst us! I ended up using this converter which I found on the net which was easy enough to use. 
https://www.pgc.umn.edu/apps/convert/ 

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