New ways vs Old ways CNC vs manual

[SmithDoor]

Remember when needs the let's use the Sextant with helper.

It work 200 years still works today

Dave

 

[Richard Hed]

Sounds like you where in Construction at one time .

Dave

Well, a bit of construction. I designed our house in Phils, and supervised the construction. I learned a whole lot. It's hurricane proof, earthquake proof, flood resistant, and bullet resistant and bomb resistant. The last two items NOT a priority but the first three extremely important. It is also built with a basement which is generally about 10-15degrees cooler than upstairs.

 

[SmithDoor]

I had difficulty finding the sun when I used the sextant - once - when in the Navy.
Decca navigator was dead easy though! Radar over the horizon was difficult to interpret if it didn't see houses or cliffs on the coastline, but only hills and mountains beyond? Dead reckoning was OK for the ship through water, and tidal flow, but wind drift was bit of a sod to estimate! And recognising your position on a strange new coastline was difficult, so we sailed to aim 25 Km North of the port (inlet or river mouth) so we knew which way to turn when we reached the coast. (South). - it was 35 miles South, so we would have hit the coast and been just out of sight (a bit foggy, 2 mile visibility) and not known which way to turn if we hadn't aimed further away than predicted error by a good chunk. Like reducing machine cuts when approaching size!
I Stuck to engine room stuff. Easier to understand big blown 2-stroke diesels!
K2

Try this 3 to 4 inch sextant.

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