Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 27-05-2012, 04:06   #31
Registered User

Join Date: Jul 2010
Location: Rockhampton, Australia
Boat: No boat, looking again.
Posts: 346
Re: Alignment of Navigation Lights?

Quote:
Originally Posted by Hud3 View Post
Saw that and thought maybe you dozed off at the keyboard...
Funny thing, I have that effect on people when talking to 'em. Seems it happens when they read my stuff on forums.
__________________

__________________
troppo is offline   Reply With Quote
Old 27-05-2012, 07:42   #32
Certifiable Refitter/Senior Wannbe
 
Wotname's Avatar

Cruisers Forum Supporter

Join Date: Jan 2008
Location: South of 43 S, Australia
Boat: Van DeStat Super Dogger 31'
Posts: 7,331
Re: Alignment of Navigation Lights?

Quote:
Originally Posted by troppo View Post
Funny thing, I have that effect on people when talking to 'em. Seems it happens when they read my stuff on forums.
__________________

__________________
All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find it was vanity: but the dreamers of the day are dangereous men, for they may act their dreams with open eyes, to make it possible. T.E. Lawrence
Wotname is offline   Reply With Quote
Old 27-05-2012, 08:59   #33
Senior Cruiser
 
Roy M's Avatar

Cruisers Forum Supporter

Join Date: Feb 2007
Location: Southwestern Yacht Club, San Diego, CA
Boat: Searunner 40 trimaran, WILDERNESS
Posts: 3,041
Images: 4
Re: Alignment of Navigation Lights?

On my boat, I started with the Aquasignal combined port/starboard bow lights mounted just below the rail of the bow pulpit. Now, I have a slightly different install. In the cockpit I use an DPDT on-off-on rocker switch for the running lights. One position is for engine power, which energizes the compass lights (on one pole), the deck level lights (Aquasignal bow and stern lights) and the mast-mounted steaming light. The other position turns on the compass lights (one pole) and the masthead tricolor light for sailing. I will be converting my masthead light to LED when I overhaul. I kept the deck lights incandescent since I had spares, they are easy to access, and the engine is running so I'm not too concerned about energy consumption.

In all cases, the running lights are more than a mere technicality. You want to make absolutely sure that another vessel has the best chance to see your vessel and to determine your course relative to them.
__________________
Roy M is offline   Reply With Quote
Old 27-05-2012, 09:08   #34
֍֎֍֎֍֎֍֎֍֎

Cruisers Forum Supporter

Join Date: Apr 2006
Posts: 13,033
Re: Alignment of Navigation Lights?

Dan, I certainly do remember it. And one could make the point that when a blind drunk in a speedboat is about to torpedo you, a half degree alignment on running lights wouldn't matter much anyway.

But on a more practical basis, how many threads have there been about "my mast isn't straight" or something else about a boat or the rigging being out of alignment? I have to wonder, is it even possible to determine the fore/aft centerline of a boat to that accuracy, for the average owner? You might need to remove the stemhead or anchor roller, to find the real pointy end dead center. And then what? Move aft to the mast, which might not be centered in the partners? Or...how to skip around that to get clear aft to the transom? Carefully measuring on what straight line to another centerline? Then carefully run the marine-grade chalk line to snap a centerline on the boat?
I'm not saying it is impossible, but I've done some carpentry making cuts accurate to 1/64th of an inch, only to find that when the humidity shifted, so did the wood and there's a reason carpenters never measure that closely.<G>

Half a degree on the centerline of a boat? Ever seen a windex that was aligned that closely? Ever seen a racer's wind instruments aligned that closely? Really??

You know, I'm not going to check the color spectrum for those lights either.<VBG>
__________________
hellosailor is offline   Reply With Quote
Old 27-05-2012, 17:53   #35
Senior Cruiser
 
Jim Cate's Avatar

Cruisers Forum Supporter

Join Date: May 2008
Location: cruising SW Pacific
Boat: Jon Sayer 1-off 46 ft fract rig sloop strip plank in W Red Cedar
Posts: 11,447
Re: Alignment of Navigation Lights?

G'Day Troppo,

IMO, the thing that you really want to do is maximize brightness, minimize obscuration, and finally and least importantly, be correctly aligned and have proper angles of visibility. These are the things that make your vessel visible to others, and which enable them to gauge your course. When you consider how much a boat yaws about when at sea, a few degrees of misalignment have very little practical effect upon such judgement.

Worrying about the entanglements of law enforcement or the legal system will bog down any installation on your boat. Your feelings about doing a reasonable job being adequate seem correct to me... let the sea lawyers squabble while you go sailing!

Cheers,

Jim
__________________
Jim and Ann s/v Insatiable II , lying Port Cygnet, Tasmania once again
Jim Cate is offline   Reply With Quote
Old 28-05-2012, 05:59   #36
Senior Cruiser

Cruisers Forum Supporter

Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 17,314
Re: Alignment of Navigation Lights?

Quote:
Originally Posted by Jim Cate View Post
(...) IMO, the thing that you really want to do is maximize brightness, (...)
+1

and all this within the limits set in colregrs - right colors and not too bright either!

b.
__________________

__________________
barnakiel is offline   Reply With Quote
Reply

Tags
navigation

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 06:14.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.