Next Article in Journal
Climate Change Adaptation on Small Island States: An Assessment of Limits and Constraints
Previous Article in Journal
Vulnerability Analysis of the Riumar Dune Field in El Garxal Coastal Wetland (Ebro Delta, Spain)
Previous Article in Special Issue
Review and Prospects for Autonomous Observing Systems in Vessels of Opportunity

An Axiom of True Courses Calculation in Great Circle Navigation

Maritime Department, University of Zadar, 23000 Zadar, Croatia
Faculty of Maritime Studies, University of Rijeka, 51000 Rijeka, Croatia
Author to whom correspondence should be addressed.
Academic Editors: Cezary Specht, Adam Weintrit and Mariusz Specht
J. Mar. Sci. Eng. 2021, 9(6), 603;
Received: 3 May 2021 / Revised: 26 May 2021 / Accepted: 28 May 2021 / Published: 31 May 2021
(This article belongs to the Special Issue Marine Measurements: Theory, Methods and Applications)
Based on traditional expressions and spherical trigonometry, at present, great circle navigation is undertaken using various navigational software packages. Recent research has mainly focused on vector algebra. These problems are calculated numerically and are thus suited to computer-aided great circle navigation. However, essential knowledge requires the navigator to be able to calculate navigation parameters without the use of aids. This requirement is met using spherical trigonometry functions and the Napier wheel. In addition, to facilitate calculation, certain axioms have been developed to determine a vessel’s true course. These axioms can lead to misleading results due to the limitations of the trigonometric functions, mathematical errors, and the type of great circle navigation. The aim of this paper is to determine a reliable trigonometric function for calculating a vessel’s course in regular and composite great circle navigation, which can be used with the proposed axioms. This was achieved using analysis of the trigonometric functions, and assessment of their impact on the vessel’s calculated course and established axioms. View Full-Text
Keywords: great circle; navigation; axiom great circle; navigation; axiom
Show Figures

Figure 1

MDPI and ACS Style

Baric, M.; Brčić, D.; Kosor, M.; Jelic, R. An Axiom of True Courses Calculation in Great Circle Navigation. J. Mar. Sci. Eng. 2021, 9, 603.

AMA Style

Baric M, Brčić D, Kosor M, Jelic R. An Axiom of True Courses Calculation in Great Circle Navigation. Journal of Marine Science and Engineering. 2021; 9(6):603.

Chicago/Turabian Style

Baric, Mate, David Brčić, Mate Kosor, and Roko Jelic. 2021. "An Axiom of True Courses Calculation in Great Circle Navigation" Journal of Marine Science and Engineering 9, no. 6: 603.

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop