sail-world.com
 
 
News Home Cruising Photo Gallery Video Gallery

 

Sail-World.com : Using simple danger bearings for sailing navigation safety

Using simple danger bearings for sailing navigation safety

'the treacherous Wide Bay Bar - shallow, with breaking surf on one side and rocks on the other'    .

Strong winds heel your cruising boat as you approach the rock-infested entrance to the pristine cove you’ve selected for an anchorage. Your main concerns are those ship-killing rocks on the starboard side of the entrance. What‘s the fastest, easiest method to back up your GPS navigation for safe passage?

It's easy to ignore traditional forms of navigation with so many touch-pad black box navigation devices at your fingertips. Shorthanded sailors in particular need fast, easy, works-every-time methods that require a minimum of chart work.

Use the simple danger. All your chart work can be done dozens of miles before you get close to shoals or dangerous reefs. It's fast, fun, easy, and accurate. Grab your trusty hand bearing compass and follow these easy steps:

1. Choose a Prominent Object:
Use danger bearings (dark red line) to keep your small cruising sailboat in safe water. Back up your GPS navigation with simple, easy-to-use techniques like this. -  Captain John Jamieson?nid=92415  


Study your navigation chart and find a prominent object on the same side as the danger.

For example, if an outcrop of dangerous rocks lies to starboard, select a prominent tank, tower, lighthouse or other object on the far side of the danger on the starboard side. Note in the illustration that the dangerous reef lies to starboard. The sailing skipper chooses a prominent Tank (note: on nautical charts--prominent, easy-to-see objects are always labeled in all capitals) on the far side of the dangerous reef on the same side as the danger (to starboard).

2. Plot the Danger Bearing Line:

Draw a line from the charted object back out onto the water (see illustration) on the outer edge of the danger. Note in the illustration how the line clears the danger. Extend the line far enough so that you can start taking bearings one to two miles before you pass the danger.

3. Measure the Danger Bearing Line:

Find the magnetic bearing of your prominent object. This will be the danger bearing you'll use. Check your measurement three times for safety's sake. That might seem silly, but parallel rules, protractors, and other measuring tools can slip and slide. Your bearings should read the same.

4. Label the Top of the Danger Bearing Line:

Label lines for safety. Not many things are as important as crystal clear labels in navigation, in particular with short-handed crews in tough sailing conditions. Danger bearings are always labeled to tell you in an instant whether any bearing you take to the prominent object will be dangerous. Prefix your danger bearing with NMT (Not More Than) for dangers to port. Prefix your danger bearing with NLT (Not Less Than) for dangers to starboard.

Notice in the illustration the danger lies to starboard, so we prefix the danger bearing with NLT. This means any bearing we take to the prominent object--in this case a Tank--should read 045M or higher. If we take a bearing of 045M, 046M, 047M, 048M… we are sailing in deep water. If we take a bearing less than 045M (i.e. 044, 043, 042…), we are standing into danger, and must change course away from the danger.

5. Take Bearings Often:

As soon as you sight your prominent object, start taking danger bearings. Continue to take bearings until you are clear of the danger. Follow the rule on top of your line. Adjust your sailing course toward the wind or current in order to compensate for drift or leeway. If at any time, your bearings fail to meet the danger bearing criteria written on top of the danger bearing line, turn hard away from the danger.

In the illustration, if we take a bearing to the Tank of 043M, this indicates we are standing into danger. We must turn hard away from the danger and steer for deeper water. We will continue to shoot bearings to the Tank until the hand bearing compass reads 045M or more. That way we will know right away as soon as we are back in safe water.

~~~~~~~~~~~~~~~~~~~~

Boost your sailing navigation skills with simple, foolproof methods like the humble danger bearing. Keep your sailing boats and sailing crew or partner safe in the waters of the world—wherever you choose to cruise!

John Jamieson (Captain John) with 25+ years of experience shows you the no-nonsense cruising skills you need beyond sailing school. Visit his website at www.skippertips.com for a free sailing tips newsletter. Become a member for instant access to 425+ articles, instructional videos, newsletters, e-Books, and live discussion forums.




by John Jamieson

  

Click on the FB Like link to post this story to your FB wall

http://www.sail-world.com/index.cfm?nid=92415

12:17 AM Sat 31 Dec 2011 GMT






Click here for printer friendly version
Click here to send us feedback or comments about this story.


Related News Stories:

19 Mar 2014  How to anchor and 'never utter a word'
10 Jan 2014  Cruising seminars from Fremantle around the coast to Cairns
10 Dec 2013  Cruising seminars from Fremantle around the coast to Cairns
04 Dec 2013  Remove the mast, check the rigging - at home!
24 Nov 2013  Young Endeavour seeks sailors between 16-23 years for 2014 voyages
06 Nov 2013  Use This Simple 'Speed and Power' Sail Trim Secret!
29 Oct 2013  How to anchor and 'never utter a word'
22 Oct 2013  Ocean cruising classes from Maryland - a great way to start
21 Oct 2013  How to stay put in a blow - the good oil.
15 Oct 2013  Cruising seminars from Fremantle around the coast to Cairns
MORE STORIES ...

News - USA and the World











420 World Championship - Singapore and Spain out front by 420 International Class Association,






























Lightning strikes cut short CFJ Nationals by Andy Kopetzky, Santa Monica Bay


















America's Cup: Group agrees to co-operate in London Meeting by Richard Gladwell/Sail-World.com/nz,








RS Feva World Championship - Brilliant sailing on day 2
Help clean up the sailing water at Rio - Image Gallery
America's Cup: Alameda makes overtures on Venue hosting for San Fran *Feature
Cape Panwa Hotel Phuket Race Week 2014 - Relishing a challenge
Edgartown Race Weekend - BBBR and Round-the-Island Race winners named
Etchells Invitational Cup - Aussies take early lead in Cowes
PWA Fuerteventura Grand Slam - Antoine Albeau strikes back on day 4
Aquece Rio – International Sailing Regatta - All set for test event
ISAF World Sailing Rankings for 28 July 2014
29er World Championship - All set in Kingston
ORC World Championship - Third Course area opens for huge fleet
Day one of the Allen RS Feva World Championships
Anna Tunnicliffe: Final two days of the 2014 Reebok CrossFit Games
Joachim Aschenbrenner takes gold at ISAF Youth Match Race Worlds 2014
Maxi Soh scores double wins in CMRC Summer Doubleheader
29er World Championship opening ceremonies in Confederation Park
PWA Fuerteventura Grand Slam - Action resumes on day 3
Land Rover Sydney Gold Coast Yacht Race Start 2014 VIDEO
Laser Radial Men’s World Championship 2014- Final day
2014 Pacific Cup - Scarlet Runner wins
Gladwell's Line: America's Cup - Joint Statement is a curious note *Feature   
ISAF Youth Match Racing World Champ - Top four battle it out for final   
BIC Techno 293 Worlds 2014 - Day 6   
PWA Fuerteventura Grand Slam - Wind teases competitors on day 2   
Women’s Match Race Golfe du Morbihan - Action-packed day of racing   
Herreshoff Marine Museum announces successful fundraising campaign   
Brewin Dolphin Commodores' Cup - The most comprehensive victory yet   
Anna Tunnicliffe fourth at mid-point of 2014 Reebok CrossFit Games   
2014 29er North American Open Championship - Australians win   
INSA Sabot II Invitational Regatta - Erik Hou claims victory   
CMRC Summer Invitational Series - Maxi Soh wins Doubleheader A event   
International Moth World Championships - Nathan Outteridge wins   
International Moth Worlds - Victory for Nathan Outteridge + Video   
PWA Fuerteventura Grand Slam - First blood to Toselli and Angulo   
Melges 24 Nationals - Record entries for 2014 and 2015 venue revealed   
Women’s Match Race Golfe du Morbihan - Anna Kjellberg claims the lead   
Jessica Uniack Memorial Beach to Bay Race at Long Beach YC   
Laser Radial Men’s World Championship - Poland tops the leaderboard   
America's Cup - Four teams confirm full support regardless of venue   
Plastic Classic takes place at Mariposa Hunters Point YC   


For this week's complete news stories select    Last 7 Days
   Search All News
For last month's complete news stories select    Last 30 Days
   Archive News







Sail-World.com  


















Switch Default Region to:

Social Media

Asia

Australia

Canada

Europe

New Zealand

United Kingdom


http://www.sail-world.com/event_images/image/Twitter_logo_small.png http://www.sail-world.com/event_images/image/FaceBook-icon.png  http://www.sail-world.com/event_images/image/RSS-Icon.png

United States

Cruising Northern

Cruising Southern

MarineBusiness World

PowerBoat World

FishingBoating World

 

Contact

Commercial

News

Search

Contact Us

Advertisers Information

Submit news/events

Search Stories/Text

Feedback

Advertisers Directory

Newsletter Archive

Photo Gallery

 

Banner Advertising Details

Newsletter Subscribe

Video Gallery

Policies

 

 

 

Privacy Policy

 

 


Cookie Policy

 

 



This site and its contents are © Copyright TetraMedia and/or the original author, photographer etc. All Rights Reserved.  Photographs are copyright by law.  If you wish to use or buy a photograph contact the photographer directly.
XLXL WAS US
LocalAds   DE  ES  FR  IT