NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Sextant lubrication and protection
From: Doug Royer
Date: 2004 Aug 2, 16:00 -0700
From: Doug Royer
Date: 2004 Aug 2, 16:00 -0700
All, I've been following the discussions with interest on a belated basis.I've been quite busy since the new security regs came into being in July. I took a post instructing and certifying mariners in STCW.Also the theory and hands-on training in the new shipboard securuty procedures for U.S.M.M. personnel. To belatedly put in my $0.02 on a few subjects: 1. I found one of the very best lubricants/film protectants to use on a sextant subjected to use at sea is a product known as NYOIL. It's not that expensive,relative to the cost of a sextant,around $9.00 for an 8 oz. bottle.That 1 bottle will last years.It has about the same charactoristics as the old Sperm Whale oil except the smell.If this is unavailable in your area a high quality Jajoba oil should be.This natural oil has the same charactoristics as the shark liver lubricants used in the past. 2. I wrote of this in the past.Perhaps some of you missed it: protect your sextant mirrors before you go to sea by applying a product known in the U.S. as RAINX to both surfaces of the Horizon mirror,the Index mirror and glass surfaces of the optics.It really retards any corrosion of the glass surfaces in the event you are negligent in the maintanance of your sextant for what ever reason. 3. Something Joel wrote about 7/8 size(yatch)sextants vs full size(metal)sextants I'd also like to comment on:I've used full size sextants exclusively in my career.I've never used a 7/8 size sextant on either a small or large vessel.I do know I,personaly,like the heft of a full size metal sextant over a full size plastic sextant for the simple reason I'm used to useing one. Now take the following with a grain of salt as I'm not a small boat driver: It was taught to me and practiced by myself and other professionals to discipline one's self during sighting procedures to take 1 cut of a body and move on to the next one,get it done and move on to the next duty.A proficiant mariner should be able to accomplish this with practice.That said most of you know my background in larger vessels and my lack of time on "yatchs". As for Joel's comment on heavier rifles vs lighter rifles and the inherant ease of holding a heavier rifle on target over a lighter rifle it is true.One learns to use a heavier rifle's weight to advantage and one doesn't get beat up by recoil as much as with a lighter rifle useing the same rounds.I'll take an M1A1(M-14) over an M-4 carbine(M-16 variant)any day because of the ease of holding it on target. I feel the same about sextants. Take care all.