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



















Audi Melges 20 U.S. Nationals - Oleander takes early lead by International Audi Melges 20 Class Association,






2014 Detroit Cup - Sam Gilmour leads by Dobbs Davis, Detroit, Michigan








Audi Hamilton Island Race Week: Riding the AC45 - VIDEO by Crosbie Lorimer, Hamilton Island










America's Cup: Five Challengers sign-on for 35th Match by Richard Gladwell/Sail-World.com/nz,


Volvo Ocean Race CEO Knut Frostad talks Time and Money (Part II) *Feature by Rob Kothe and the Sail-World team,


















AWT Quatro Desert Showdown at Punta San Carlos by American Windsurfing Tour,




2014 IFDS Disabled Sailing World Championship - Day 2
Audi Hamilton Island Race Week; MC38s Lindeman Island Race VIDEO
2014 Audi Melges 20 U.S. National Championship - Ready to rock
IFDS Worlds - Wind delays, but racing continues in Halifax
IFDS World Championships - Day 2 images by Jude Robertson
MS Cup - Three days until the start
America's Cup: Rod Davis - Time for a change after ten years with team *Feature
ISAF seeking hosting bids for Nations Cup
Laser 4.7 Youth Worlds - Luvisetto and Alexadr Boite victorious +Video
IFDS World Championships - Action shots by Tim Wilkes
Maxi yacht rendezvous this September in Sardinia
World Yacht Racing Forum 2014: 'Growing the business of Yacht Racing'
Clipper Race: 2015-16 edition of world's longest ocean race 70% full
Sevenstar Round Britain and Ireland - Swish smash 5th World Record
Leaderboards take shape at the Nanjing Youth Olympic Games 2014
IFDS Worlds - Hot competition on first day of racing
Challenging Conditions - CORK OCR
IFDS World Championship - Day 1 for the US Sailing Team
2014 Melges 20 World Championship - Countdown begins
2014 Nanjing Youth Olympic Games - Day 3
America's Cup: Team NZ wish Davis well with new team *Feature   
Fisher's View: Sailing perfection at Hamilton Island- Day 3   
Roble and Wilson still number one match racers in the U.S.   
2014 Formula Kite World Championship Day 1   
IFDS World Championship - Day 1 images by Jude Robertson   
Volvo Ocean Race: Forget the f-word - Team SCA profiled   
52 Super Series - Fleet grows, 2015 dates revealed   
420 and 470 Junior Europeans - Teams from 9 nations on the podium   
IFDS Worlds - Former president presented with ISAF awards medal   
Nanjing Youth Olympic Games - Improvements aplenty in Byte CII fleets   
America's Cup: New Zealand loses top coach to Artemis Racing   
Volvo Ocean Race 2014-15 CEO Knut Frostad talks (Part I) *Feature   
Sevenstar Round Britain and Ireland Race Day 9 - Swish on record pace   
2014 CORK Olympic Classes Regatta - Day 3   
2014 Nanjing Youth Olympic Games - Day 2   
2014 IFDS World Championship: Opening Ceremony images   
Opera House Cup - Images by Ingrid Abery   
Teams descend upon Cowes for inaugural J/111 World Championships   
Hamilton Island Race Week: Everywhere there's smiley people   
IFDS World Championships - US Paralympic hopefuls ready for racing   


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