Wet Notes Thigh Holder for Nav Data

Using a velcro elastic knee wrap will do a great job of holding wet notes pad, writing tools, and reading glasses for recording underway navigation data while on watch in the cockpit.

Black Diamond Cosmo Head Lamp

The Black Diamond Cosmo head lamp is perfect for sailors with a memory saved variable light dimmer and a red light night vision mode. Lots of utility at an affordable cost.

On The Go Micro Tool Kit

Here is a pocket tool kit that can handle many sailboat needs. This kit will pair well with a multi tool such as a Leatherman. A perfect combo for dealing with hose clamps, zip ties, wire, screws, bolts, nuts, shackles, Phillips, flatheads, torx and Allens.

Regulating a Mechanical Wrist Chronometer Movement

https://calibercorner.com/seiko-caliber-nh35a/

The attached YouTube link explains the regulation of a mechanical watch movement very well. The movement shown in the video is a NH 35A made by Seiko and has the potential to be accurate enough for celestial navigation when a daily rate correction is applied. https://www.youtube.com/watch?v=vz_1rhl1lvY&list=LL&index=6&t=124s

Correction Table For Nautical Almanac Exactly Four Years Out Of Date.

The above table will correct the daily page star SHA Dec list on a Nautical Almanac exactly four years out of date to the current year. The Sun data can be used as is uncorrected.

Ex-Meridian Short Table

This Ex-Meridian short table can be used with a pocket trig calculator or slide rule to obtain an accurate latitude. Add the correction to a bodies altitude that is near meridianal passage (MP) and then solve for latitude as if observed exactly on the meridian. +XM' = minutes of arc to add to observation Ho. t = meridian angle L = latitude d = declination Ho = corrected observed altitude

Weather Proof Custom References and Trig Tables

An alternative to lamination for weatherproofing useful tables and references is to use three ring sheet protectors with a 1/2 inch binder. Pages are very easy to handle.