Ocean sailing and sun celestial fix

Ocean sailing and sun celestial fix: key focus on this website is repetitive learning, a crucial element in mastering professional sextant observations at sea, especially in challenging weather conditions.

Enjoy exploring this page, BUT ONLY AFTER COMPLETING the foundational La Rochelle exercise.

The main goal of these exercises is to calculate and understand how to calculate the line of position with the sun in daytime.

“La Rochelle” is the first in a series of eight identical exercises, each named after a major city in the world near the simulated sextant observations.

This page focuses on the Madagascar exercise. You can find the others on the Celestial Course page.

While the La Rochelle exercise is for free, the answers for the remaining exercises can be bought in the store.

Ocean sailing and sun celestial fix, text about the practice of the sextant, and the far more difficult calculations

On this page titled ‘Galapagos,’ you will find all the simulated sextant sun sight observations necessary for calculating the line of position at sea off the coast of Galapagos

giant tortoise of the Galapagos Islands  (2019) author: FelixReyesPhotography

Ocean sailing and sun celestial fix:

Ocean sailing and sun celestial fix, image calculator

print/download PDF worksheet or copy by hand


First part of the sheet of the sun sight observations

Ocean sailing and sun celestial fix, worksheet with red entries

Firstly, start manually completing the red entries on this page.


Ocean sailing and sun celestial fix Galapagos:

Time UT and Date

Ocean sailing and sun celestial fix, image watch

DAY = Monday; DATE = 06/06/2022; UT Time = 15:58:54


Ocean sailing and sun celestial fix:

sextant height (Hs)

Ocean sailing and sun celestial fix, image sextant height

lower limb


index error

Ocean sailing and sun celestial fix,  image  sextant index error

Non adjustable error

Ocean sailing and sun celestial fix, inspection certificate of a sextant

Ocean sailing and sun celestial fix:

eye height

Ocean sailing and sun celestial fix, image eye above the sea

Dead reckoning position:

Latitude (L) :

03°58′ South

Longitude (G) :

086° 54′ West


daily page

nautical almanac

Ocean sailing and sun celestial fix, image nautical almanac daily page
6 june 2022

Also this daily page has been downloaded on the nauticalalmanac.it website with the kind permission of its author Capt. Roberto Iori




Cape Elisabeth Maine Rapidfire

Ocean sailing and sun celestial fix Galapagos

The sea around the Galapagos Islands

In fact, the sea around the Galapagos Islands, located in the Pacific Ocean about 1,000 kilometers off the coast of Ecuador, is renowned for its rich biodiversity and unique marine life.

Moreover, the Galapagos Marine Reserve, established in 1998, is one of the largest marine protected areas in the world. Certainly, the convergence of several major ocean currents, including the cold Humboldt and warm Panama currents, creates a mosaic of habitats supporting a diverse array of marine species.

The nutrient-rich waters sustain iconic wildlife such as marine iguanas, sea lions, and various species of sharks. The Galapagos penguin, one of the rarest penguin species, is found here. The seas around the Galapagos are crucial for the survival of numerous species and contribute significantly to the archipelago’s global ecological importance.

Finally, conservation efforts aim to protect this delicate marine ecosystem from various threats, including overfishing and climate change.