This paper suggests standard manoeuvres which can serve as the basis for evaluating ship controllability, in cases when no particular specification has been drawn up concerning the control of a ship equipped with a lateral thrust unit (LTU). Calculation procedures are given for prediction of LTU thrust necessary for a ship to perform the suggested manoeuvres while under the action of external forces due to wind of a given intensity. The paper also supplies data concerning ship speed influence on LTU thrust and moment, which may be used for calculation of the manoeuvring behaviour of a ship moving ahead or astern.
Get full access to this article
View all access options for this article.
References
1.
DewhurstP. K. ‘Experience in the control of ships by right angle drive thrusters’, Naval Engrs' Jl197082 (No. 4).
2.
LebedevE. P.PershitsR. Y.RussetzkyA. A.AvrashkovN. A.TarassiukA. B. ‘Sredstva aktivnogo upravleniya sudami’ (Means of active control of ships), Izd. Sudostroyeniye, Leningrad1969 [in Russian].
3.
StuntzG. J.TaylorR. J. ‘Some aspects of bowthruster design’, Trans. Soc. nav. Archit. mar. Engrs196472.
4.
NorrbinN. H. ‘Steuern bei geringen Fahrt. Probleme und Hilfsmittel’, Hansa1964101 (No. 10).
5.
EnglishJ. W. ‘The design and performance of lateral thrust units for ships’, Qly Trans. R. Instn nav. Archit.1963105 (No. 3).
6.
TaniguchiK.WatanabeK.KasaiH. ‘Investigations into the fundamental characteristics and operating performances of side thrusters’, Mitsubishi Tech. Bull. 1966 (No. 35).
7.
NorrbinN. H. ‘The effectiveness of a bow thruster at low and medium ship speeds’, Int. Shipbldng Prog.196714 (No. 157).
8.
McMahonH. M.HesterD. D.PalferyI. G. ‘Vortex shedding from a turbulent jet in a cross-wind’, J. Fluid Mech.197148 (No. 1).
