Monday, November 4, 2024

Plotting Sheet Covering 3 Degrees of Latitude

This is a new style of plotting sheet for a standard letter sized sheet of paper (one nautical mile per millimeter).. The coverage is 3 degrees of latitude and 4 degrees of longitude. To scale a degree of longitude use the scale at the left margin that has the number of latitude minutes for one degree of longitude going from 0 to 60 degrees of latitude. The example shows scale for 35 degrees of latitude.

Sunday, April 14, 2024

Compact Wallet Sight Reduction

It is possible to go very small with celestial sight reduction yet still achieve 1' precision. Kit includes: a credit card calculator, 10' sin cos tables (1 page), Wescott protractor, and mini Pilot pencil 0.5mm. The table can be printed from the online PDF of Schaum's Outlines Mathematical Handbook of Formulas and Tables pages 247 and 248. https://www.academia.edu/41808762/Mathematical_Handbook_of_Formulas_and_Tables_SCHAUMS_outlines

Tuesday, January 30, 2024

Magnification Visor

This magnification visor provides both hands free for chart work, mechanical watch repair, and slide rule calculations. Link: https://www.ebay.com/itm/334368400401?hash=item4dd9e8e411:g:B~oAAOSwsNhfB2jg&amdata=enc%3AAQAIAAAA8A6Do5M29frhrStCgEJ3vDZ7CIdB2B1M8YD4yBIjJqmGZPPmf6A7hlWW%2BWinwr6YrovgHyfyPRW7ilBJKDhfAYvfNiaSo27wQs7OQwHrCHiEkDsWgJcYy7ZPAHjrR4b1XKhB1AdsSRCbwDX0iAmzPgOMOKeXORgxFnRBaGqRxIhUKiYHSWQg594A8LS2U49ao9rePCA66oK85GEjkAjaEH8XUJYLlX7Mm0CymzHTRnuou0OfB9fMJCRqUrdnmEA6%2F64Nmux%2BsZQVp14puXuCyxr3SsSj6isT7VsUnzOKji7rJ5t9rY%2BUAkiJa%2Be%2Bg0ZoEQ%3D%3D%7Ctkp%3ABFBMwNmutqtj

Monday, July 31, 2023

Sharp EL-506X Calculator For Navigation

The Sharp EL-506X calculator is a very capable tool for celestial navigation at an excellent value. The best feature is the ability to store up to four formulae which is retained in the memory even when calculator is off. This model is user friendly and will serve the nav station well. https://global.sharp/contents/calculator/support/guidebook/documents/scientific_calculator_operation_guide.pdf

Thursday, January 19, 2023

Perfect Onboard Hose and Hose Clamp Pocket Tools

An incredibly handy pocket tool set for dealing with any onboard hose and hose clamp issues. The Milwaukee FastBack 1505 with 6ft tape measure and a 6 in 1 Klein stubby.

Wednesday, December 14, 2022

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.

Tuesday, July 12, 2022

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.