Journal of Dalian Maritime University >
2016 , Vol. 42 >Issue 3: 37 - 43
DOI: https://doi.org/10.16411/j.cnki.issn1006-7736.2016.03.007
Analysis on characteristics of ship power parameters for world merchant fleet
Received date: 2016-04-05
Revised date: 2016-05-09
Online published: 2023-06-01
By analyzing statistically the composition of the world merchant fleet in terms of ship type, age and tonnage, six major types of ships, including bulk carriers, oil/chemical tankers, container ships, general cargo ships, liquefied gas carriers and ro-ro/passenger ships were selected as research objective. According to the proportions of numbers in terms of age and tonnage, the relationships of main engine nominal power, auxiliary engine nominal power and ship design speed against gross tonnage were determined based on random sampling of Clarksons’ fleet database. Results show that the percentage of the ships which utilize four-stroke diesel engine, two-stroke diesel engine and steam turbine as main engine is respectively 27.6%, 72.0% and 0.4%, the average numbers of main engines and auxiliary engines installed onboard on each major types of ships are respectively 1.01~1.82 and 2.66~3.52, the average value of auxiliary engine nominal power to main engine nominal power are 0.19~0.35 for different types of ships, the relationships of ship power parameters and gross tonnage can be expressed as power function or linear function, and the fitting relationship do not change significantly in the past three decades except container ships. The proposed fitting formulae for ship power parameters could provide a reference for estimation of ship emissions and related research.
Key words： world merchant fleet; ship power parameter; regression analysis
XING Hui , HAN Zhi-tao , DUAN Shu-lin* , HUANG Lian-zhong . Analysis on characteristics of ship power parameters for world merchant fleet[J]. Journal of Dalian Maritime University, 2016 , 42(3) : 37 -43 . DOI: 10.16411/j.cnki.issn1006-7736.2016.03.007
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