Shipbuilding

Komarovskiy Yu.

YURI A. KOMAROVSKIY, Candidate of Engineering Sciences, Leading Researcher, e-mail: komarovskiy.yu.a@gmail.com
Maritime State University named after Adm. G.I. Nevel’skoy.
50A Verkhneportovaya St., Vladivostok, Russia, 690003

The GPS-receiver used to evaluate the speed reduction
of a vessel changing its course

Abstract: Taking into consideration the losses of the steaming time of the ship turning or yawing on course is a problem that has not been satisfactorily solved. It is partly due to the high complexity of exact analytical description of the processes occurring at small deviations from the rectilinear motion of the vessel. The present paper proposes a statistical approach to the analytical description of the speed reduction of the vessel and its subsequent ramp-up after regaining the track. The treatment of the data of the experimental observations obtained through the vessel's GPS-receiver has made it possible to develop the regression models of the processes of changes in the vessel's speed. The obtained expressions for the losses of steaming time enable one to evaluate them in a simpler way and with a sufficient accuracy. The results of the investigation may also be used to develop the ways of optimal tuning the vessel's autopilot.
Key words: speed reduction, speed ramp-up, GPS-receiver, regression analysis.

REFERENCES

1. Azovtsev A.I., Ogai S.А., Moskalenko O.V. Prospects of transport provision of complex development of the Arctic zone and the freezing shelf seaworthy inflatable all-terrain vehicles on the tracks. Transport Problems of the Far East, Proceedings of the Tenth anniversary of the international scientific-practical conference. Vladivostok, MSU adm. G.I. Nevelskоy, 2013, pp. 132-134. (in Russ.). [Azovcev A.I., Ogaj S.А., Moskalenko O.V. Perspektivy transportnogo obespechenija kompleksnogo osvoenija Arkticheskoj zony i zamerzajushhego shel'fa morehodnymi vezdehodami na vozduhoopornyh gusenicah // Problemy transporta Dal'nego Vostoka: materialy jubilejnoj desjatoj mezhdunarodnoj nauchno-prakticheskoj konferencii, Vladivostok, MGU im. adm. G.I. Nevel'skogo, 2013. S. 132–134].
2. Azovtsev A.I., Ogai S.A., Moskalenko O.V. A breakthrough in the field of off road amphibious transport. Science and Transportation (special issue). 2012:48-50. (in Russ.). [Azovcev A.I., Ogaj S.A., Moskalenko O.V. Proryv v oblasti vnedorozhnogo amfibijnogo transporta // Nauka i transport (specvypusk). 2012. S. 48–50].
3. Antonov V.A. Pismennyi M.N. Theoretical conning questions: Proc. allowance. 2^nd ed, Vladivostok, Marine State University. adm. G.I. Nevelsky, 2007, 78 p. (in Russ.). [Antonov V.A., Pis'mennyj M.N. Teoreticheskie voprosy upravlenija sudnom: ucheb. posobie. 2-e izd., pererab. i dop. Vladivostok: MGU im. adm. G. I. Nevel'skogo, 2007. 78 s.].
4. Droblenkov V.F., Ermolaev A.I., Moore N.P. et al. Handbook of ship theory. M., Military Publishing House, 1984, 589 p. (in Russ.). [Droblenkov V.F., Ermolaev A.I., Muru N.P. i dr. Spravochnik po teorii korablja. M.: Voennoe izd-vo, 1984. 589 s.].
5. Komarowski Yu.A. Influence of the installation location of the antenna GPS-receiver on the vector of the absolute speed of the vessel when changing course. Scientific problems of transportation in Siberia and the Far East. 2012;2:164–168. (in Russ.).  [Komarovskij Ju.A. Vlijanie mesta ustanovki antenny GPS-prijomnika na vektor absoljutnoj skorosti sudna pri izmenenii kursa // Nauchnye problemy transporta Sibiri i Dal'nego Vostoka. 2012. N 2. S. 164–168].
6. Sobolev G.V. Manageability and automation of ship navigation. Hydrodynamics curvilinear motion and rate regulation. L., Shipbuilding, 1978, 481 p. (in Russ.). [Sobolev G.V. Upravljaemost' korablja i avtomatizacija sudovozhdenija. Gidrodinamika krivolinejnogo dvizhenija i regulirovanie kursa. L.: Sudostroenie, 1978. 481 s.].