The effect of voluntary speed reduction criteria on attainable ship speed

Prpić-Oršić, Jasna and Faltinsen, Odd Magnus and Parunov, Joško (2015) The effect of voluntary speed reduction criteria on attainable ship speed. = The effect of voluntary speed reduction criteria on attainable ship speed. In: 16th International Congress of the International Maritime Association of the Mediterranean IMAM 2015 - Towards Green Marine Technology and Transport, 21.-24.09.2015., Pula, Hrvatska.

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Official URL: http://bib.irb.hr/prikazi-rad?rad=792925

Abstract

The reasons for ship speed reduction in a seaway may generally be divided into two categories: natural reasons, such as the added resistance due to wind and waves, change of wake field and loss of thrust ; technical or “design” reasons that are controlled by the shipmaster, such as very large motion amplitudes, velocities and accelerations, slamming, green seas, overload of the main engine. The natural reasons influence the ship speed at relatively low significant wave heights. When the ship is caught in heavy seas, there are two manoeuvres that the shipmaster can undertake to avoid excessive ship motion and hull damage: changing course or voluntary speed reduction. There is no strict rule that determines under which conditions the shipmaster would reduce the speed, so various authors have proposed different criteria. This paper presents a study of the effect of the various voluntary speed reduction criteria to attainable speed of ship on seaway.

Item Type: Conference or Workshop Item (Lecture)
Keywords (Croatian): voluntary speed reduction, seakeeping criteria
Subjects: TECHNICAL SCIENCE
Divisions: 600 Department of Naval Engineering and Marine Technology > 620 Chair of Marine Structures Design
Indexed in Web of Science: No
Indexed in Current Contents: No
Citations SCOPUS: 0 (06.10.2017.)
Date Deposited: 20 May 2016 14:43
Last Modified: 06 Oct 2017 12:23
URI: http://repozitorij.fsb.hr/id/eprint/5868

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