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night sailing practice
AS my cruise is coming up, I decided to go out night sailing to see
how everything worked in the dark. Havent been night sailing in several years. Had very little wind, sailed about 12 miles due south till I was near "O" tower (an AIR Force navigational structure for drones out in the Gulf) and then back in. Everything went well even with no moon and nearly total dark till I got back near shore and got disoriented suddenly. Didnt trust the lights I was seeing so checked the GPS which confirmed my position. I still do almost all of my navigation by coastal piloting methods and dead reckoning so the GPS just confirmed I was right. Still, the sudden disorientation was freaky. Carabelle does not show up very well from the water and the plethora of cell towers and radio towers makes finding the correct flashing red difficult. I was surprised there were NO other boats out on a Saturday night except a lone shrimper who disappeared to the south. All in all, a good experience confirming my boat seems ready. |
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Getting disoriented from lights can happen even to those of us who do a
lot of night "sailing". Sometimes it's from a clear night where you can see lights you normally don't see, or just a slightly new angle of approach to a familiar landfall. Good reason to use more than one method of navigation, whenever possible. otn |
otnmbrd wrote:
Getting disoriented from lights can happen even to those of us who do a lot of night "sailing". Sometimes it's from a clear night where you can see lights you normally don't see, or just a slightly new angle of approach to a familiar landfall. Good reason to use more than one method of navigation, whenever possible. Last winter we went offshore more than usual, so I usually found myself standing the watch in the wee hours in the morning as Bob can't sleep early in the night and I can. We were going south off Georgia and I was keeping a lookout for ships on the horizon. I dodged some freighters, saw some more dolphins and saw a meteor. We were hearing radio traffic from Charleston, and Savannah both. That gives me some warning when the big ships say they are going out the channel. The stars are very bright except on the west near shore where I can see the glow in the sky from the various cities we pass - first Charleston and then I guess Beaufort (dimmer) and then Savannah. There are big rollers coming from the east, but the surface of the water is pretty smooth There's also some kind of strobe thing east of us. Later on, after we got past Savannah I kept seeing these lights to the east of us, and they seemed to be on a collision course or at least they were stationary in relation to our boat and I didn't think there were any ATON out there.. They were white. Eventually, when some of the lights got higher above the horizon, I figured out that it was the stars rising. Then the following spring, we were going north from Charleston to the Cape Fear River and I saw a bright light in the western sky. A ship? Where would a ship be coming from? It's all marshland over there. No - it's too big and too high up for a ship - plus I can't see any red or green lights. A lighthouse? Can't find any lighthouses on the charts over on that shore, and again it's too high up. There's no moon tonight, and I know stars don't rise in the west, so it can't be a star this time and it's too bright. A plane taking off? But it doesn't seem to get higher. Eventually the light goes away, so I guessed it was a plane that landed. After a bit I saw another one. There is not much traffic on the radio except the CG - I hear from stations all the way from Mayport to Cape Hatteras. Did hear an Army ship saying that it has hazardous cargo. Later in the night, I heard the CG asking people if they'd seen flares. Then the light dawned. Those lights I saw were FLARES!!! grandma Rosalie |
Later on, after we got past Savannah I kept seeing these lights to the east of us, and they seemed to be on a collision course or at least they were stationary in relation to our boat and I didn't think there were any ATON out there.. They were white. Eventually, when some of the lights got higher above the horizon, I figured out that it was the stars rising. I am glad to hear that I am not the only one that has had that happen. For me I saw a white light astern coming over the horizon. No problem. A little bit later I saw a lower white light that appeared to be a ship coming straight at us. I change course about 30 degrees and kept watching it as it go brighter. The lights were still coming straight on so I changed course 60 degrees in the opposite direction. I got thinking about this situation and was about to wake the off watch, but I wanted to make one more check and there was the moon coming up. I had been looking at a star straight up over the tip of the moon. It took me a while before I ever admitted that I was being run down by the moon. Funny story now, but not on the late watch after ten days of looking at nothing but an occasional ship and lots of ocean. Leanne |
You might consider laying off shore till morning or trying to time your
arrival for daylight. I won't go in at night unless I've been there during the day and am familiar with the harbor. "Parallax" wrote in message om... AS my cruise is coming up, I decided to go out night sailing to see how everything worked in the dark. Havent been night sailing in several years. Had very little wind, sailed about 12 miles due south till I was near "O" tower (an AIR Force navigational structure for drones out in the Gulf) and then back in. Everything went well even with no moon and nearly total dark till I got back near shore and got disoriented suddenly. Didnt trust the lights I was seeing so checked the GPS which confirmed my position. I still do almost all of my navigation by coastal piloting methods and dead reckoning so the GPS just confirmed I was right. Still, the sudden disorientation was freaky. Carabelle does not show up very well from the water and the plethora of cell towers and radio towers makes finding the correct flashing red difficult. I was surprised there were NO other boats out on a Saturday night except a lone shrimper who disappeared to the south. All in all, a good experience confirming my boat seems ready. |
On Mon, 8 Nov 2004 09:57:17 -0500, "Bryan" wrote:
You might consider laying off shore till morning or trying to time your arrival for daylight. I won't go in at night unless I've been there during the day and am familiar with the harbor. ===================================== That's good advice for a tricky entrance or a poorly equipped boat. With good electronic charting and/or radar it's usually not that difficult however. One of the problems in many inlets however is that the buoys are not charted because of constant change to the channel. That's definitely a reason to wait for daylight in my opinion. |
One moonless night I was sailing up the bay , looking for the red
light to make the turn towards Fairlee Creek. I spotted it, headed towards it but when I looked again it was a green light. Went below, checked the charts. Back up top , found the red light again. Next thing I know it turned YELLOW. Finally realized it was a traffic light on shore, a few miles before my buoy. -- Scott Vernon Plowville Pa _/)__/)_/)_ "Rosalie B." wrote in message ... otnmbrd wrote: Getting disoriented from lights can happen even to those of us who do a lot of night "sailing". Sometimes it's from a clear night where you can see lights you normally don't see, or just a slightly new angle of approach to a familiar landfall. Good reason to use more than one method of navigation, whenever possible. Last winter we went offshore more than usual, so I usually found myself standing the watch in the wee hours in the morning as Bob can't sleep early in the night and I can. We were going south off Georgia and I was keeping a lookout for ships on the horizon. I dodged some freighters, saw some more dolphins and saw a meteor. We were hearing radio traffic from Charleston, and Savannah both. That gives me some warning when the big ships say they are going out the channel. The stars are very bright except on the west near shore where I can see the glow in the sky from the various cities we pass - first Charleston and then I guess Beaufort (dimmer) and then Savannah. There are big rollers coming from the east, but the surface of the water is pretty smooth There's also some kind of strobe thing east of us. Later on, after we got past Savannah I kept seeing these lights to the east of us, and they seemed to be on a collision course or at least they were stationary in relation to our boat and I didn't think there were any ATON out there.. They were white. Eventually, when some of the lights got higher above the horizon, I figured out that it was the stars rising. Then the following spring, we were going north from Charleston to the Cape Fear River and I saw a bright light in the western sky. A ship? Where would a ship be coming from? It's all marshland over there. No - it's too big and too high up for a ship - plus I can't see any red or green lights. A lighthouse? Can't find any lighthouses on the charts over on that shore, and again it's too high up. There's no moon tonight, and I know stars don't rise in the west, so it can't be a star this time and it's too bright. A plane taking off? But it doesn't seem to get higher. Eventually the light goes away, so I guessed it was a plane that landed. After a bit I saw another one. There is not much traffic on the radio except the CG - I hear from stations all the way from Mayport to Cape Hatteras. Did hear an Army ship saying that it has hazardous cargo. Later in the night, I heard the CG asking people if they'd seen flares. Then the light dawned. Those lights I saw were FLARES!!! grandma Rosalie |
Wayne.B wrote in message . ..
On Mon, 8 Nov 2004 09:57:17 -0500, "Bryan" wrote: You might consider laying off shore till morning or trying to time your arrival for daylight. I won't go in at night unless I've been there during the day and am familiar with the harbor. ===================================== That's good advice for a tricky entrance or a poorly equipped boat. With good electronic charting and/or radar it's usually not that difficult however. One of the problems in many inlets however is that the buoys are not charted because of constant change to the channel. That's definitely a reason to wait for daylight in my opinion. The biggest problem I saw on this little night sailing excercise was the unlighted buoys. Two of them, I only saw when I was abeam of them and two I never did see. Running into these markers is the biggest hazard on a night like that. The reflective coating must be faded from the sun so they just do not show up until fairly close. Furhtermore, there is some discrepancy between what the charts say and some markers. There is also a recent uncharted shrimpboat wreck at the west end of the island that is partway into the channel thazt I was never able to spotlight on the way in. The excercise was good in exposing a couple of small problems and bringing back some old skills. For example, I did not have a small flashlight for taking a quick peak at the chart so I was blinded for about 30 secs after every time I looked at it. In the day, I obsessively rely on my handbearing compass to take bearings which enables me to go on a course till a bearing is presented to something which will clear all obstacles. My hand compass is not lighted and it would have blinded me to take such a bearing so I used the GPS. I completely forgot about simply pointing the boat at the object in question and using the dimly lighted boat compass. |
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Comments interspersed:
Parallax wrote: The biggest problem I saw on this little night sailing excercise was the unlighted buoys. Two of them, I only saw when I was abeam of them and two I never did see. Running into these markers is the biggest hazard on a night like that. Always has and probably always will be a problem. Two thoughts: Have a narrow beam flashlight handy (one which doesn't throw a large diffused light) to pick these out. Normally, this type light won't totally destroy your night vision .... normally. When coming up on this type buoy, check your charts for other, more visible landmarks, which you might be able to use for back-up positioning .... course, there's always electronic methods potentially available, but if you are cruising and piloting, the visual back-ups may give you a more secure feeling. The reflective coating must be faded from the sun so they just do not show up until fairly close. Furhtermore, there is some discrepancy between what the charts say and some markers. Again, an ongoing problem ..... always consider the chart info to be where the marker "should" be, not where it "is".... give yourself a built-in amount of safety room, around any marker and whenever possible, "danger bearings" when approaching any you might think suspect, though all would be better. There is also a recent uncharted shrimpboat wreck at the west end of the island that is partway into the channel thazt I was never able to spotlight on the way in. Local Notice to Mariners on the net, is all I can suggest here for possible latest info on these items. Note: I've had numerous queries on a wreck in my area. My surprise at the queries.... the wreck is a small fishing boat in 300' of water that is marked as a "wreck", not a "dangerous wreck" .... point being, some necessary info may not always get out or be understood, in the LNM. The excercise was good in exposing a couple of small problems and bringing back some old skills. For example, I did not have a small flashlight for taking a quick peak at the chart so I was blinded for about 30 secs after every time I looked at it. In the day, I obsessively rely on my handbearing compass to take bearings which enables me to go on a course till a bearing is presented to something which will clear all obstacles. My hand compass is not lighted and it would have blinded me to take such a bearing so I used the GPS. I completely forgot about simply pointing the boat at the object in question and using the dimly lighted boat compass. I had a portable azimuth circle which mounted on the cabin hatch for taking relative bearings ( could easily be mounted over a binnacle) when there were two people available. I would use this, compared to a "mark" heading on the steering compass (which I knew the error to -deviation tables). This type of rig would need to be boat and/or operator specific, but coupled with the ole red flashlight, I found it the least cumbersome .... to each his/her own. otn |
You might consider laying off shore till morning or trying to time your
arrival for daylight prudent advice, to be ignored only by those who believe God will save them from abject stupidity. speaking of which: With good electronic charting and/or radar it's usually not that difficult however. |
In article ,
says... On 10 Nov 2004 11:55:08 -0800, (Parallax) wrote: My hand compass is not lighted and it would have blinded me to take such a bearing so I used the GPS. I completely forgot about simply pointing the boat at the object in question and using the dimly lighted boat compass. You know, it strikes me that you could very easily wire an AAA battery to a pair of glasses frames, attached to a single red LED of the appropriate voltage. This would make a great "night light" for pelorus bearings and brief looks at charts. Would look dorky, of course, but I am looking for a functional five-dollar solution here, not the next $59 special at West Marine: "NightSailor Vision Goggles!" R. I've been using a red Photon MicroLight on a lanyard around my neck for that. They are only ~$20 and if you wear glasses or a hat they have a clip that can be attached. www.photonlight.com I just checked with the manufacturer and the 3 and Freedom are both fairly water resistant. -- ********************************************** Scott H. Sexton help@ www.sexton.com sexton.com Eeyore's Birthday Party eeyore.sexton.com ********************************************** |
otnmbrd wrote:
Comments interspersed: Parallax wrote: The biggest problem I saw on this little night sailing excercise was the unlighted buoys. Two of them, I only saw when I was abeam of them and two I never did see. Running into these markers is the biggest hazard on a night like that. Always has and probably always will be a problem. Two thoughts: Have a narrow beam flashlight handy (one which doesn't throw a large diffused light) to pick these out. Normally, this type light won't totally destroy your night vision .... normally. When coming up on this type buoy, check your charts for other, more visible landmarks, which you might be able to use for back-up positioning .... course, there's always electronic methods potentially available, but if you are cruising and piloting, the visual back-ups may give you a more secure feeling. What we do might not work for you, but usually I'm at the wheel and watching the computer chart and Bob is up with the big spotlight looking for markers. At least that's they way we come in to Miami at night. We do it that way because while Miami is really well lit up at night, one of the first times we came in (from the Bahamas), Bob was out on deck getting stuff ready to pick up a mooring and taking care of the sails etc, and I ran on the wrong side of some floaters south of Dodge Island just where the ICW comes by. Fortunately it was high tide and the depth sounder didn't even go off. Then Bob told me that I should just head for the Rickenbacker Causeway (our mooring was down there just on the port side of it) because there were no more markers, and that was not true (and he denies absolutely that he said any such thing). Suddenly I saw a square green reflection right in front of my port running light - oops. did manage to swerve in time to miss the daymark, but not by much. Since then, he's always been out on deck with the light so I will be sure to see stuff like that.g The reflective coating must be faded from the sun so they just do not show up until fairly close. Furhtermore, there is some discrepancy between what the charts say and some markers. Again, an ongoing problem ..... always consider the chart info to be where the marker "should" be, not where it "is".... give yourself a built-in amount of safety room, around any marker and whenever possible, "danger bearings" when approaching any you might think suspect, though all would be better. There is also a recent uncharted shrimpboat wreck at the west end of the island that is partway into the channel thazt I was never able to spotlight on the way in. Local Notice to Mariners on the net, is all I can suggest here for possible latest info on these items. Note: I've had numerous queries on a wreck in my area. My surprise at the queries.... the wreck is a small fishing boat in 300' of water that is marked as a "wreck", not a "dangerous wreck" .... point being, some necessary info may not always get out or be understood, in the LNM. The excercise was good in exposing a couple of small problems and bringing back some old skills. For example, I did not have a small flashlight for taking a quick peak at the chart so I was blinded for about 30 secs after every time I looked at it. In the day, I We have a light in our compass and the GPS lighted (on low), and the computer chart can be put on "night" which makes everything red. I actually like it better just dimmed down because when everything is red all the colors disappear. We also have the engine panel lighted (not very bright). obsessively rely on my handbearing compass to take bearings which enables me to go on a course till a bearing is presented to something which will clear all obstacles. My hand compass is not lighted and it would have blinded me to take such a bearing so I used the GPS. I completely forgot about simply pointing the boat at the object in question and using the dimly lighted boat compass. I had a portable azimuth circle which mounted on the cabin hatch for taking relative bearings ( could easily be mounted over a binnacle) when there were two people available. I would use this, compared to a "mark" heading on the steering compass (which I knew the error to -deviation tables). This type of rig would need to be boat and/or operator specific, but coupled with the ole red flashlight, I found it the least cumbersome .... to each his/her own. We do go into some inlets after dark and don't go into others. Miami is pretty well lit and well marked. Lucaya is not and has some uncharted and unlit buoys. So even though we have a previous track on the computer, I would not go in at night. grandma Rosalie |
JAXAshby wrote: You might consider laying off shore till morning or trying to time your arrival for daylight prudent advice, to be ignored only by those who believe God will save them from abject stupidity. speaking of which: With good electronic charting and/or radar it's usually not that difficult however. Typically, Doodles, your lack of experience is showing. otn |
lack of experience? I laid off a wide harbor for most of the night on an
island 1500 miles from here last Friday. how about you, over-the-knee? what were you doing? sailing a rubber ducky? From: otnmbrd Date: 11/10/2004 9:17 PM Eastern Standard Time Message-id: .net JAXAshby wrote: You might consider laying off shore till morning or trying to time your arrival for daylight prudent advice, to be ignored only by those who believe God will save them from abject stupidity. speaking of which: With good electronic charting and/or radar it's usually not that difficult however. Typically, Doodles, your lack of experience is showing. otn |
Always good advice. If you are not familiar with a particular landfall,
never be afraid to hold off or at least do a few "round turns" until you can feel comfortable with your position and route of approach .... even with those you are normally familiar with. Even with GPS, radar, your visual/ mental sense of what is around you and where you are, is extremely important to your "comfort factor" when navigating in any restricted or close quarters. otn Rosalie B. wrote: snip We do go into some inlets after dark and don't go into others. Miami is pretty well lit and well marked. Lucaya is not and has some uncharted and unlit buoys. So even though we have a previous track on the computer, I would not go in at night. grandma Rosalie |
over-the-knee, you make a loser flip-flop politician look good by comparison.
so, which it is, o-t-k? making harbor at night is good or bad? keep in the mind the original poster was asking about making an unknown harbor, but expand the definition to include any harbor you wish, including your bathtub. From: otnmbrd Date: 11/10/2004 9:30 PM Eastern Standard Time Message-id: k.net Always good advice. If you are not familiar with a particular landfall, never be afraid to hold off or at least do a few "round turns" until you can feel comfortable with your position and route of approach .... even with those you are normally familiar with. Even with GPS, radar, your visual/ mental sense of what is around you and where you are, is extremely important to your "comfort factor" when navigating in any restricted or close quarters. otn Rosalie B. wrote: snip We do go into some inlets after dark and don't go into others. Miami is pretty well lit and well marked. Lucaya is not and has some uncharted and unlit buoys. So even though we have a previous track on the computer, I would not go in at night. grandma Rosalie |
JAXAshby wrote: lack of experience? I laid off a wide harbor for most of the night on an island 1500 miles from here last Friday. Why? Are you telling us you couldn't find your way safely into Bermuda at night? (you don't mention the weather conditions and I know that YOU were NOT the person making the decision to lay off) how about you, over-the-knee? what were you doing? sailing a rubber ducky? Last Friday....hmmmmm nope, I was sailing a 650' car carrier out a 290' wide channel, from a standing start, in 30k of wind which was on my stbd beam, at night .... ever try that? Doodles, you are at the low end of "seasonal weekend warrior" BR (bedroom utility) .... I stand by my statement. otn |
JAXAshby wrote: over-the-knee, you make a loser flip-flop politician look good by comparison. so, which it is, o-t-k? making harbor at night is good or bad? keep in the mind the original poster was asking about making an unknown harbor, but expand the definition to include any harbor you wish, including your bathtub. Once again, Doodles, your inexperience is showing. Whether it's a known harbor or an unknown harbor, making the approach can be touchy, especially at night, and especially if you feel uncomfortable with what you are seeing. There's nothing flipflop about my statement, just some good sound advice, in addition to what Rosalie stated. The fact that you don't understand either, just adds to our collective sense of your inexperience. otn From: otnmbrd Date: 11/10/2004 9:30 PM Eastern Standard Time Message-id: k.net Always good advice. If you are not familiar with a particular landfall, never be afraid to hold off or at least do a few "round turns" until you can feel comfortable with your position and route of approach .... even with those you are normally familiar with. Even with GPS, radar, your visual/ mental sense of what is around you and where you are, is extremely important to your "comfort factor" when navigating in any restricted or close quarters. otn |
rhys wrote in message . ..
On 10 Nov 2004 11:55:08 -0800, (Parallax) wrote: My hand compass is not lighted and it would have blinded me to take such a bearing so I used the GPS. I completely forgot about simply pointing the boat at the object in question and using the dimly lighted boat compass. You know, it strikes me that you could very easily wire an AAA battery to a pair of glasses frames, attached to a single red LED of the appropriate voltage. This would make a great "night light" for pelorus bearings and brief looks at charts. Would look dorky, of course, but I am looking for a functional five-dollar solution here, not the next $59 special at West Marine: "NightSailor Vision Goggles!" R. Lol, Dorky minds all think alike. Such a thing actually exists and is sold at Wal Mart for about $9.00. I thought of this and remembered that when I was looking for suitable low cost lights for caving I had seen it. Having always been sort of a dorkish geek, the looks won't bother me. |
I knew I remembered some problem with the old red-light advice, and found
this reference: www.aoa.org/clincare/aviation-night.asp The problems wasn't what I thought it was, but the site contains a large amount of fascinating information about night vision. One of the problems it mentions regarding red light is that you might not be able to see red things on your chart. Are any important things on charts colored red? Red light is also harder to focus on in dim conditions, esp. as we grow middle-aged and our "arms shorten." ==== Charles T. Low www.boatdocking.com ==== "Dave" wrote in message ... On 10 Nov 2004 11:55:08 -0800, (Parallax) said: For example, I did not have a small flashlight for taking a quick peak at the chart so I was blinded for about 30 secs after every time I looked at it The trick there is to use, not necessarily a small light, but a red light. When I was doing night sailing I used to have a red plastic disk I could insert above the flashlight lens. Dave |
They have 'head lights' , strap on or hat style. I've seen them with
red lenses. Sporting goods stores have them. -- Scott Vernon Plowville Pa _/)__/)_/)_ "Parallax" wrote in message om... rhys wrote in message . .. On 10 Nov 2004 11:55:08 -0800, (Parallax) wrote: My hand compass is not lighted and it would have blinded me to take such a bearing so I used the GPS. I completely forgot about simply pointing the boat at the object in question and using the dimly lighted boat compass. You know, it strikes me that you could very easily wire an AAA battery to a pair of glasses frames, attached to a single red LED of the appropriate voltage. This would make a great "night light" for pelorus bearings and brief looks at charts. Would look dorky, of course, but I am looking for a functional five-dollar solution here, not the next $59 special at West Marine: "NightSailor Vision Goggles!" R. Lol, Dorky minds all think alike. Such a thing actually exists and is sold at Wal Mart for about $9.00. I thought of this and remembered that when I was looking for suitable low cost lights for caving I had seen it. Having always been sort of a dorkish geek, the looks won't bother me. |
it wasnt Bermuda, the winds were calm and there are rocks around both Bermuda
and where we were going. idiots think rocks always are where the charts show them to be. From: otnmbrd Date: 11/10/2004 9:57 PM Eastern Standard Time Message-id: JAXAshby wrote: lack of experience? I laid off a wide harbor for most of the night on an island 1500 miles from here last Friday. Why? Are you telling us you couldn't find your way safely into Bermuda at night? (you don't mention the weather conditions and I know that YOU were NOT the person making the decision to lay off) how about you, over-the-knee? what were you doing? sailing a rubber ducky? Last Friday....hmmmmm nope, I was sailing a 650' car carrier out a 290' wide channel, from a standing start, in 30k of wind which was on my stbd beam, at night .... ever try that? Doodles, you are at the low end of "seasonal weekend warrior" BR (bedroom utility) .... I stand by my statement. otn |
flip-flop loser.
From: otnmbrd Date: 11/10/2004 10:18 PM Eastern Standard Time Message-id: JAXAshby wrote: over-the-knee, you make a loser flip-flop politician look good by comparison. so, which it is, o-t-k? making harbor at night is good or bad? keep in the mind the original poster was asking about making an unknown harbor, but expand the definition to include any harbor you wish, including your bathtub. Once again, Doodles, your inexperience is showing. Whether it's a known harbor or an unknown harbor, making the approach can be touchy, especially at night, and especially if you feel uncomfortable with what you are seeing. There's nothing flipflop about my statement, just some good sound advice, in addition to what Rosalie stated. The fact that you don't understand either, just adds to our collective sense of your inexperience. otn From: otnmbrd Date: 11/10/2004 9:30 PM Eastern Standard Time Message-id: k.net Always good advice. If you are not familiar with a particular landfall, never be afraid to hold off or at least do a few "round turns" until you can feel comfortable with your position and route of approach .... even with those you are normally familiar with. Even with GPS, radar, your visual/ mental sense of what is around you and where you are, is extremely important to your "comfort factor" when navigating in any restricted or close quarters. otn |
On Thu, 11 Nov 2004 06:42:44 -0500, "Charles T. Low"
[withoutUN] wrote: Red light is also harder to focus on in dim conditions, esp. as we grow middle-aged and our "arms shorten." ====================================== That is definitely true. I recommend keeping a pair or two of dime store reading glasses in your nav station along with an illuminated magnifier. Electronic charting on a laptop is an even better solution (paper charts for backup of course). |
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On Thu, 11 Nov 2004 00:46:49 GMT, otnmbrd
wrote: I had a portable azimuth circle which mounted on the cabin hatch for taking relative bearings ( could easily be mounted over a binnacle) when there were two people available. I would use this, compared to a "mark" heading on the steering compass (which I knew the error to -deviation tables). This type of rig would need to be boat and/or operator specific, but coupled with the ole red flashlight, I found it the least cumbersome .... to each his/her own. An idea I've seen on a couple of race boats with older skippers are pieces of tape oriented on the coach house or the coaming or the deck (your situation will vary) that give 30, 45, 60 and 90 degree bearing on both tacks. 45 deg forward on a shore mark to abeam or 45 deg aft. is pretty accurate if you have the chart and can keep even rough time...a good skill to have when W turns off the GPS or whatever. The tapes would have to be positioned by trial and error and would be based on the normal helming position. It's an "at a glance" pilotage aid that supplements the usual pelorus and/or bulkhead-binnacle compass bearing. I find it particular useful for running fixes when I'm alone and using the "60 D St." formula I am sure we all know...right? G The pieces of tape needn't be huge, and for night use, they could be red and green reflective tape of the sort kids put on their bike frames. The smallest beam of light (say, from a penlight on a lanyard or a headband) will make them show up without blowing your night vision. Jeez, Parallax, whatever you've got is catching! The less I sail (I'm on the hard for the winter now), the more I invent! R. |
Charles T. Low wrote: I knew I remembered some problem with the old red-light advice, and found this reference: www.aoa.org/clincare/aviation-night.asp The problems wasn't what I thought it was, but the site contains a large amount of fascinating information about night vision. One of the problems it mentions regarding red light is that you might not be able to see red things on your chart. Are any important things on charts colored red? Red light is also harder to focus on in dim conditions, esp. as we grow middle-aged and our "arms shorten." ==== Charles T. Low www.boatdocking.com There are any number of things in "magenta", which are affected by red lights. |
I understand the US Navy uses dim red light to conserve nite vision, while the
US Army uses dim green and the US Air Force uses dim blue. take your choice. the only common factor is nite vision and dim Red light is also harder to focus on in dim conditions, esp. as we grow middle-aged and our "arms shorten." ====================================== That is definitely true. I recommend keeping a pair or two of dime store reading glasses in your nav station along with an illuminated magnifier. Electronic charting on a laptop is an even better solution (paper charts for backup of course). |
Yes, thank you, my friend, that's my fault for forgetting that you can't see
me wink when I ask a question that I assume is rhetorical(!). ==== Charles T. Low www.boatdocking.com ==== "otnmbrd" wrote in message hlink.net... Charles T. Low wrote:... Are any important things on charts colored red? There are any number of things in "magenta", which are affected by red lights. |
Charles T. Low wrote: Yes, thank you, my friend, that's my fault for forgetting that you can't see me wink when I ask a question that I assume is rhetorical(!). ==== Charles T. Low www.boatdocking.com BG ;) otn |
In article ,
otnmbrd wrote: JAXAshby wrote: over-the-knee, you make a loser flip-flop politician look good by comparison. so, which it is, o-t-k? making harbor at night is good or bad? keep in the mind the original poster was asking about making an unknown harbor, but expand the definition to include any harbor you wish, including your bathtub. Once again, Doodles, your inexperience is showing. Whether it's a known harbor or an unknown harbor, making the approach can be touchy, especially at night, and especially if you feel uncomfortable with what you are seeing. There's nothing flipflop about my statement, just some good sound advice, in addition to what Rosalie stated. The fact that you don't understand either, just adds to our collective sense of your inexperience. otn Known or unknown, any harbor at night can be a problem. I've entered "a few" at night over the years, and the most difficult to date was our HOME port. On a dark night, there are only two dim markers on the bulkhead that are VERY difficult to separate from the background clutter. Miss them to either side, and we'd be on rather unforgiving rocks. We regularly travel after dark on the Chesapeake to extend our (mostly) weekend range. The anchorages are truly in our back yard and by now, we know most of them better than most, but in each case, we treat them with extra respect in the dark. Truth be told, we're more worried about crab trap floats than the bottom, so enter more comfortably under sail than power. -- Jere Lull Xan-a-Deux ('73 Tanzer 28 #4 out of Tolchester, MD) Xan's Pages: http://members.dca.net/jerelull/X-Main.html Our BVI FAQs (290+ pics) http://homepage.mac.com/jerelull/BVI/ |
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