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Hydrodynamic characteristics of fast cargo ships of new generation

Wełnicki W., Bech T.

Polish Maritime Research

2000

Vol. 7, nr 4

3-6

The paper contains results of investigations on the design of three types of fast container ships: catamaran, semi -trimaran and monohull whose resistance, seakeeping qualities and propulsive characteristics were tested. Influence of some parameters of the ships on their resistance was also considered. Comparison of their characteristics witch those of traditional hull forms showed that the new designs appeared superior especially with respect to ship resistance.

The enhancement of seakeeping qualities of fast catamaran by means of stabilizing foils

Wełnicki W.

Polish Maritime Research

1998

nr 3

10-13

Some aspects of insufficient seakeeping qualities of fast catamarans are commonly known. The intention of this investigations was to obtain quantitative data about the influence of application of hydrofoils on seakeeping qualities of a fast catamaran. Two types of foils were investigated: single foil spread between the hulls and double T - foils under the bows. Three locations of a single foil over the ship length and three angles of attack were tested. The comparsion was made between resistance, accelerations, heave and pitch in irregular head waves of the ship with and without foils. Quantitative effects of foils in different configurations and different sea and operation conditions were estimated.