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Simple Ways to Estimate Distances Between Marks

Printed From: Yachts and Yachting Online
Category: General
Forum Name: Race Management
Forum Discription: For race officers and competiors to discuss the topic
Printed Date: 30 Nov 20 at 2:05pm
Software Version: Web Wiz Forums 9.665y -

Topic: Simple Ways to Estimate Distances Between Marks
Posted By: Laser3
Subject: Simple Ways to Estimate Distances Between Marks
Date Posted: 20 Aug 19 at 9:36pm
Any ideas for simple ways to measure distances when laying marks?
=> Man-over-board can be used if you have a GPS
=> Golf range finders do not go far enough (<800m)
=> Binoculars exist with inbuilt compass and reticule but they are very expensive
Any other suggestions?

Posted By: Brass
Date Posted: 20 Aug 19 at 11:50pm
Don't use MOB, just use Set Waypoint and Go To.

So Golf range finder will do just fine for a starting line as long as you're not running an Etchells Worlds.

Subtension angles with Bino Graticules is tedious and difficult.

Other alternatives are:

How many/what fraction of an Olympic Pool/Soccer field

Halving the Distance.

Tale a look at an Army Fieldcraft Manual on judging distances.

But generally GPS is the easiest and most accurate.

Posted By: Laser3
Date Posted: 21 Aug 19 at 12:41am
Thanks for your reply. Cheers

PS I found apps which are designed to measure golf shot distance.
The app gets GPS location at the start and at the end of your shot, and calculates the distance between the 2 locations. Seems to work well. I will do a comparison with GPS.

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