Sextant nautical training

Enjoy exploring this page sextant nautical training, 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 Perth 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.

Sextant nautical training:

Take a moment to explore the sextant usage page, where it is clarified that operating the sextant itself isn’t overly complex.

Sextant nautical training, direct and reflected image of the sextant

However, the associated calculations may require time and possibly pose some challenges.

Perth Australia (2017) author: Pedro Szekely

Sextant nautical training:

Firstly, on this page Perth you will find all the sextant sun sight observations required after taking a sun sight at sea off the coast of Perth

Sextant nautical training, image watch

print/download PDF worksheet or copy by hand


First part of the sheet of the sun sight observations

Sextant nautical training, image worksheet with red entries

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


Sextant nautical training Perth:

Time UT and Date

Sextant nautical training, image watch

DAY = Tuesday; DATE = 16/08/2022; UT Time = 07:14:35


Sextant nautical training:

sextant height (Hs)

Sextant nautical training, image sextant sextant height

lower limb


index error

Sextant nautical training, image sextant index error

Sextant nautical training:

Non adjustable error

Sextant nautical training, image inspection certificate of a sextant

eye height

Sextant nautical training, eye above the sea

Dead reckoning position:

Latitude (L) :

27°25′ South

Longitude (G) :

106°39′ East


daily page

nautical almanac

Sextant nautical training, image daily page of the nautical almanac
16 august 2022

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


Sextant nautical training:



Sextant nautical training Perth

The waters off the coast of Perth

Indeed, the Indian Ocean is the third-largest of the world’s oceanic divisions, covering about 20% of the Earth’s water surface. Also, the waters off the coast of Perth are known for their rich marine biodiversity and are popular for various water activities, including surfing, snorkeling, and whale watching.

Perth’s coastline includes beautiful beaches such as Cottesloe Beach, Scarborough Beach, and Trigg Beach. Rottnest Island, located off the coast of Perth, is another popular destination known for its pristine beaches and diverse marine life.

Furthemore, the climate in this region is generally Mediterranean, with hot, dry summers and mild, wet winters. Also, the sea around Perth supports a variety of marine life, including dolphins, seals, and various species of fish. The Great Barrier Reef, one of the world’s most famous coral reefs, is located on the northeast coast of Australia, quite a distance from Perth.