TRANSACTIONS OF THE KRYLOV STATE RESEARCH CENTRE

Science journal

 
ISSN (print) 2542-2324 /(online) 2618-8244


Articles of The Transactions of KSRC








Developing the outlines of the speedy catamaran designed to reduce external force impacts in waves



Full text article (in russian)

Year

 
2011

Issue

 
344

Volume

 
3

Pages

 
81–92

Caption

 
Developing the outlines of the speedy catamaran designed to reduce external force impacts in waves

Authors

 
G. Kryzhevich

Keywords

 
multi-hull vessels, speedy catamarans, external forces, slamming, consumption of materials, comfort

Summary

 
The paper suggests a number of new technical solutions designed to reduce external force impacts on speedy catamarans (SC) in sea waves, including:
-    reducing vertical clearance at the stern end of the catamaran;
-    installing wedge-shaped plates at the bow part of the SC’s cross-structure thus forming a “step” at their stern parts;
-    making special cut-outs in the bow part of the hull which give the access from both sides to the slamming area in the bow part of the cross-structure and allow the liquid flows to go more freely out of the area of shock interaction between the cross-structure and waves;
-    selecting a wedge-like shape of hull waterlines in the cut-out area which facilitate the liquid flow deviation from the center plane;
-    installing foils in front of the area of the shock interaction between the cross-structure and waves;
-    reducing relative length of the cross-structure (as compared to the design length of the whole ship).
The results of experimental and analytical assessments allow making a conclusion about the efficiency of these design solutions which reduce operational restrictions (in the aspect of wave intensity), additional water resistance to the ship running, and also enhance reliability, lifetime, consumption of materials and comfort of the speedy catamaran.

Rubrics

 
Naval architecture

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