PaddleWise by thread

From: Steve Holtzman <sh_at_actglobal.net>
subject: Re: [Paddlewise] GPS
Date: Thu, 26 Apr 2001 17:26:48 -0700
> Being relatively new to kayaking, I am constantly learning new tricks
> and getting advice from more experienced kayakers ( the few I have found
> in the DFW, TX area).  Having just recently stumbled across your list, I
> thought I would get some advice on GPS systems.  I kayak down the Laguna
> Madre and want to make a two week trip in July.  My problem:  I have a
> hard time estimating where I am and distance to finish/turnaround
> point.  I hear GPS is good and bad for this.  Anyone have advice on
> economical "working" unit that might give me a clue?

I use GPS extensively on my ocean paddling and am frequently the "designated
navigator" on our longer trips. It is very important not to forget your map
and compass skills and common sense. GPS is a tool and nothing more. It does
not replace the need for a compass or a chart. Some people have tried to use
the compass function and forget that it is only accurate while you are
moving. Additionally, speed measurements at the walking or paddling speeds
are extremely inaccurate. To see this in action, turn your GPS on and stand
still. If you zoom in on the plot of your position, you will see that even
though the Gov't turned off Selective Availability, your position still
wanders.

Make certain that you understand the difference in speed between ships and
kayaks. Although it will take a kayaker 20 minutes to travel one NM at a
paddling speed of 3 knots, it will take a ship 2 minutes to cover the same
distance at 30 knots (ships in traffic lanes frequently move at 20 - 30
knots in the Los Angeles area).

In my opinion, it's best to keep a chart open in front of you and
continuously make certain that you know where you are and make certain that
you have added additional Lat and Long marks to you chart so that they are
at an easy to work with interval. Above all, have fun but be safe and
practice your navigation skills every time you go out.

Other than that, almost any GPS available today will be adequate for
kayaking. The "waterproof" ratings on all of them do not include the battery
compartment. I keep mine in a GPS dry bag and it works perfectly through it.

Steve Holtzman

***************************************************************************
PaddleWise Paddling Mailing List - Any opinions or suggestions expressed
here are solely those of the writer(s). You must assume the entire
responsibility for reliance upon them. All postings copyright the author.
Submissions:     PaddleWise_at_PaddleWise.net
Subscriptions:   PaddleWise-request_at_PaddleWise.net
Website:         http://www.paddlewise.net/
***************************************************************************
From: Jochen Grikschat <grikschat_at_surfeu.de>
subject: Re: [Paddlewise] GPS
Date: Fri, 27 Apr 2001 08:57:28 +0200
Hello!

>. The "waterproof" ratings on all of them do not include the battery
> compartment. I keep mine in a GPS dry bag and it works perfectly through
it.

I got an 12V Accu inmy kayak and wanted to use this for my GPS, just to safe
expensive battery and to use the GPS longer. So I place the GPS like Steve
in a Aquapac bag, but put in the 12V adapter, glue in a cable and the cable
I could fit to a flat and waterproof plug connection, fitted to my rear deck
left side behind my cockpit.
So, the GPs is floatable, it is fixed by the cable and I could use it
NONSTOP WITHOUT changing the batteries. Now I got a pic from this special
bag (where I have to put on a little bit more glue to the cable) and the
Aqua Signal plug connection.

I think this is solution, which must be interesting for more paddlers. I
could send the pics out...
=========
I also got some negative experience with GPS in general. Not because of the
GPs, but on my preparation for the tour.
I was paddling from Borkum (island) through an almost unused waterway
towards Ameland (NL). I follow the buoys and when the waterway ended above
Schiermonnikoog I wanīt to check out the distance to the Island. But I
couldnīt. I got a chart, for sure. But I made a copy and forget that I need
the chart-sides to get the exact coordinates. So, my GPS give me the exact
position, but without a waypoint from the island, this was totally useless.
It was a warm and slightly foggy day, now wind, now waves.
So I decided padling on 180 degree until I could see the island. But I
landed on a beach and the fog was so thick, I couldnīt see the lighthouse. I
took out my kayak cart and do something for my legs :-)) walking around this
huuuuge sand. Afterwards it became clear, I miss the waterway to the island
inshore area within about 5 or 10 minutes of paddling to the west. Ugh!

Sh*t happens! Keep smiling, it was a nice trip and Iīve learned a lot.

all the best
Jochen

***************************************************************************
PaddleWise Paddling Mailing List - Any opinions or suggestions expressed
here are solely those of the writer(s). You must assume the entire
responsibility for reliance upon them. All postings copyright the author.
Submissions:     PaddleWise_at_PaddleWise.net
Subscriptions:   PaddleWise-request_at_PaddleWise.net
Website:         http://www.paddlewise.net/
***************************************************************************

This archive was generated by hypermail 2.4.0 : Thu Aug 21 2025 - 16:33:22 PDT