SUMMARY
The recommendations for choosing the completeness coefficients of ship hull for transitional mode are proposed in the article. The existing domestically and foreign produced ships and vessels data are analyzed. The statistical analysis of the common completeness coefficients value was made. The recommendations concerning choice of the prismatic coefficient are given. The formulas as may be necessary for designing high-speed ships are offered. These boats are operated in the transitional mode, which is characterized by an increasing water resistance, so it is important to implement the increased focus on boats form design.