colour blindness & navigation - SailNet Community
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post #1 of 15 Old 01-18-2011 Thread Starter
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colour blindness & navigation

they say that one in ten males are colour blind..... i`m one of those & tend to be colour blind in the red spectrum. this can be very daunting & i lack confidence especially at night. any colours that have red in them such as purple, mauve, marroon etc. really fool me...funny really, as i used to be a professional photographer, but colours in nature don`t clash & i never had problems. but put me in a photographic studio & i`m lost. in australia they are replacing the cones & the cans on top of poles with lights. the shape of the cones & cans in daylight were great for me....even at night i could shine a spotlight on them & pick out the shapes. if it was triangular i new it was green. with the lights i really can`t tell the difference between red & green until i get very close to them. i was wondering if others have the same problem & if anyone has any ideas to help improve my situation.

stuck in broken bay building up funds to fix my just bought adams 24. intend sailing eastcoast australia, if i can ever pluck up the courage to go outside the heads!!
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post #2 of 15 Old 01-18-2011
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In are Harbor we have a lot of red/green unlighted Nuns that are tough even with normal color abilty as on a really dark night the green is really tough to spot

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post #3 of 15 Old 01-18-2011
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I'm colour blind as well and have the exact same problem at night. My solution so far has been to have a good first mate with normal vision!

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post #4 of 15 Old 01-18-2011
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You could try using a piece of red or green clear plastic at night, hold up and look through the red and the red lights disapear and the green is visible look through the green and the green disapears and the red is visible. I am not colour blind but I have heard it works.

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post #5 of 15 Old 01-18-2011
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Originally Posted by SimonV View Post
You could try using a piece of red or green clear plastic at night, hold up and look through the red and the red lights disapear and the green is visible look through the green and the green disapears and the red is visible. I am not colour blind but I have heard it works.
Simon, it is a good thing you're not color-blind. The red lights should show up clearly through the red plastic, since the red plastic TRANSMITS red light. The GREEN LIGHTS would appear a lot darker, since the red plastic blocks GREEN LIGHT. Same thing for the GREEN PLASTIC... filtering out the RED LIGHT and passing the GREEN lights.

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post #6 of 15 Old 01-18-2011 Thread Starter
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i`ve never tried wearing sunglasses at night but i wonder if looking through a pair of polaroids with a redish tint improves colour blindness with reds, day or night???

stuck in broken bay building up funds to fix my just bought adams 24. intend sailing eastcoast australia, if i can ever pluck up the courage to go outside the heads!!
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post #7 of 15 Old 01-18-2011
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OK guys - There is another thread about all of this.

I'm colour-blind, is this going to be an issue?


actually there are degrees of Colour Vision Deficient. That is why some guys who have been told they are colour 'blind' can see a difference b/w r and g.

However - it cannot be fixed/tricked or sorted. So if you use an up to date plotter you'll be fine.


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post #8 of 15 Old 01-18-2011
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"I'm colour blind as well and have the exact same problem at night. My solution so far has been to have a good first mate with normal vision!"
I'm also colour blind and I do practice what was stated, i.e. have always a mate with normal vision, not only to advise in the night BUT ALSO DURING THE DAY.
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post #9 of 15 Old 01-18-2011
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Same problem here. It's no fun. My method is to slowly creep up to the light in question until I'm close enough to identify.

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post #10 of 15 Old 01-18-2011 Thread Starter
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thanks st anna, did`nt realise there was a colour blind discussion out there... your link is much appeciated and very informative

stuck in broken bay building up funds to fix my just bought adams 24. intend sailing eastcoast australia, if i can ever pluck up the courage to go outside the heads!!

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