Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items









Go Back   SailNet Community > General Interest Forums > General Discussion (sailing related)
 Not a Member? 



Reply
 
LinkBack Thread Tools Search this Thread
  #811 (permalink)  
Old 08-20-2008
Plumper's Avatar
Sailor
 
Join Date: Nov 2007
Location: Vancouver Island
Posts: 845
Rep Power: 5
Plumper is on a distinguished road
I'm sorry, my experience with multiple choice questions only permit one answer normally. I guess my correct single answer doesn't count.

SD, making large and obvious course changes to avoid R of R situations must make getting anywhere quite challenging. Probably half the time you could just stand on and the other vessel would alter.......in accordance with the rules.
__________________
There is a tide in the affairs of men,
Which, taken at the flood, leads on to fortune;
Omitted, all the voyage of their life
Is bound in shallows and in miseries.
Shakespeare, Julius Caesar IV, iii, 217

Last edited by Plumper; 08-20-2008 at 11:56 AM.
Reply With Quote Share with Facebook
  #812 (permalink)  
Old 08-20-2008
Boasun's Avatar
Senior Member
 
Join Date: Feb 2007
Location: New Orleans, LA
Posts: 2,981
Rep Power: 7
Boasun will become famous soon enough Boasun will become famous soon enough
Quote:
Originally Posted by Plumper View Post
I'm sorry, my experience with multiple choice questions only permit one answer normally. I guess my correct single answer doesn't count.

SD, making large and obvious course changes to avoid R of R situations must make getting anywhere quite challenging. Probably half the time you could just stand on and the other vessel would alter.......in accordance with the rules.
The Stand-on Vessel as by law maintains course and speed. But she has to watch the Give-way Vessel to ensure that they will indeed give way. And if they don't then and only then will you have to maneuver to avoid or lessen the impact of a collision caused by the idiot on the Give-way Vessel. That is why I prefer to be the Give-way vessel. It allows me to maneuver as necessary and only depend on the Stand-on vessel to maintain course & Spd.
__________________
1600 Ton Master, 2nd Mate Unlimited Tonnage

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Maritime Instructor
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

S/V Rapture
Reply With Quote Share with Facebook
  #813 (permalink)  
Old 08-20-2008
Senior Member
 
Join Date: Jun 2005
Location: New Orleans
Posts: 1,328
Rep Power: 7
nolatom will become famous soon enough
I may have seen this in a book, so probably not an original thought, but I think you have "zones" as vessels become aware of each other.

First is the evaluation zone. You look, visually, at lights, at radar (and AIS and ARPA/ plotting,) if you if you have it, and figure out if you have a close-quarters situation.

Second is the reaction zone. You realize you have a steady bearing-decreasing range situation, figure out if you're the stand-on or the give-way vessel, wonder if the other vessel is aware of you, maybe you get on the radio, and try to sort it out. If you're the give-way, this would be the time to make a sharp course change as a "signal" to the stand-on that you see him and realize that someone has to make a course change.

Third is the "avoiding action" zone. Here's where the give-way actually gives way, and when the stand-on makes sure he is..

Fourth is the "I gotta get out of this now, or we'll collide" zone. This is when the stand-on vessel can alter course and speed while there's still just enough room to avoid it even if the other guy is asleep at the wheel/autopilot. Here's where the danger signal comes in, if not sounded earlier.

Fifth is the "it's too late/general alarm" phase. Give-way hasn't given, stand-on hasn't taken sufficient action, and you're going to collide, only question is what type and angle of collision it will be.

I don't need to say what the sixth zone is, except you don't want to get there.

I've mostly been thinking of crossing situations here. The toughest are the not-quite-head-on, when one vessel thinks green to green is acceptable, while the other doesn't and alters to starboard. A recipe for a hit or a near-miss.

And in fog, bear in mind that Rule 19 trumps all the other meeting and crossing rules. There's really no "right of way" in fog. All vessels of all types have to navigate with caution until any close situation has passed.


These zones may be miles apart for fast oceangoing vessels, or only a few hundred yards apart for smaller recreational boats at a harbor entrance, and can expand or contract depending on visibility, weather, sea state, darkness, lots of factors.

And these zones depend on both vessels seeing each other, visually or electronically. If they do, usually things work out. If one or both of them don't, then they often don't.
Reply With Quote Share with Facebook
Sponsored Links
  #814 (permalink)  
Old 08-20-2008
Plumper's Avatar
Sailor
 
Join Date: Nov 2007
Location: Vancouver Island
Posts: 845
Rep Power: 5
Plumper is on a distinguished road
Quote:
Originally Posted by Boasun View Post
The Stand-on Vessel as by law maintains course and speed. But she has to watch the Give-way Vessel to ensure that they will indeed give way. And if they don't then and only then will you have to maneuver to avoid or lessen the impact of a collision caused by the idiot on the Give-way Vessel. That is why I prefer to be the Give-way vessel. It allows me to maneuver as necessary and only depend on the Stand-on vessel to maintain course & Spd.
I also prefer to be the give-way vessel, then you have all the cards.

My question to SD dealt with actually getting somewhere not really anti-collision. My experience has been that altering for everyone is not really desirable. It is probably fine on a pleasure craft out for a daysail, but for boats with a purpose and schedule it would be maddening.
__________________
There is a tide in the affairs of men,
Which, taken at the flood, leads on to fortune;
Omitted, all the voyage of their life
Is bound in shallows and in miseries.
Shakespeare, Julius Caesar IV, iii, 217
Reply With Quote Share with Facebook
  #815 (permalink)  
Old 08-20-2008
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,315
Rep Power: 11
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
I don't find it all that much of a problem. I find that if you make small course alterations, the other skipper may not recognize them in time and it leads to a close contact situation. By making course changes fairly obvious, it simplifies things for both vessels. I'd rather be proactive and work early to avoid a collosion, than be reactive and have a closer call or collision.

Quote:
Originally Posted by Plumper View Post
I'm sorry, my experience with multiple choice questions only permit one answer normally. I guess my correct single answer doesn't count.

SD, making large and obvious course changes to avoid R of R situations must make getting anywhere quite challenging. Probably half the time you could just stand on and the other vessel would alter.......in accordance with the rules.
New question:

At the end of a storm, your first mate comes up to you and says he sees "Dutchman's Breeches". What did he see???
__________________
Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Share with Facebook
  #816 (permalink)  
Old 08-20-2008
Boasun's Avatar
Senior Member
 
Join Date: Feb 2007
Location: New Orleans, LA
Posts: 2,981
Rep Power: 7
Boasun will become famous soon enough Boasun will become famous soon enough
A small patch of blue sky, just large enough to make a pair of breeches for a Dutchman.

What is happening when there is a BLAD in the area??
__________________
1600 Ton Master, 2nd Mate Unlimited Tonnage

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Maritime Instructor
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

S/V Rapture
Reply With Quote Share with Facebook
  #817 (permalink)  
Old 08-21-2008
Boasun's Avatar
Senior Member
 
Join Date: Feb 2007
Location: New Orleans, LA
Posts: 2,981
Rep Power: 7
Boasun will become famous soon enough Boasun will become famous soon enough
A BLAD folks, is a Squall with rain. A term use on the north coasts...

Here is an easy question: International & Inland; Which signal is recognized as a distress signal?
A. Directing the beam of the search light at another vessel.
B. A smoke signal giving off orange colored smoke.
C. A whistle signal of one prolonged and three short blasts.
D. The International code "Pan" spoken on the Radio Telephone.
__________________
1600 Ton Master, 2nd Mate Unlimited Tonnage

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Maritime Instructor
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

S/V Rapture
Reply With Quote Share with Facebook
  #818 (permalink)  
Old 08-21-2008
Plumper's Avatar
Sailor
 
Join Date: Nov 2007
Location: Vancouver Island
Posts: 845
Rep Power: 5
Plumper is on a distinguished road
B. A smoke signal giving off orange colored smoke.

Now I'm going sailing.
__________________
There is a tide in the affairs of men,
Which, taken at the flood, leads on to fortune;
Omitted, all the voyage of their life
Is bound in shallows and in miseries.
Shakespeare, Julius Caesar IV, iii, 217
Reply With Quote Share with Facebook
  #819 (permalink)  
Old 08-21-2008
Boasun's Avatar
Senior Member
 
Join Date: Feb 2007
Location: New Orleans, LA
Posts: 2,981
Rep Power: 7
Boasun will become famous soon enough Boasun will become famous soon enough
Quote:
Originally Posted by Plumper View Post
B. A smoke signal giving off orange colored smoke.

Now I'm going sailing.
Up to me for another question I guess: A tad bit of weather!?
The direction of the surface wind is__________________.
A. directly from high pressure toward low pressure
B. directly from low pressure toward high pressure
C. from high pressure toward low pressure deflected by the earth's rotation
D. from low pressure toward high pressure deflected by the earth's rotation
__________________
1600 Ton Master, 2nd Mate Unlimited Tonnage

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Maritime Instructor
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

S/V Rapture
Reply With Quote Share with Facebook
  #820 (permalink)  
Old 08-21-2008
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,315
Rep Power: 11
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
C. from high pressure toward low pressure deflected by the earth's rotation
__________________
Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Installing an anchor windlass GoodOldBoat Gear and Maintenance Articles 7 02-24-2011 10:22 PM
Bluewater defined? dch Learning to Sail 44 07-29-2009 07:20 PM
The Dollar "crisis" sailaway21 Off Topic 63 12-01-2007 06:25 PM
learning to work on engines? jbarros Gear & Maintenance 5 01-21-2003 04:48 PM
First time in cruising, in mexico, on a 20'' sloop. jbarros Cruising & Liveaboard Forum 7 08-29-2002 09:28 AM


All times are GMT -4. The time now is 12:23 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2012, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.0 PL2
(c) Marine.com LLC 2000-2012