Section 3 Rudder

301. General

1. The rudder stock and upper edge of the rudder are to be effectively protected against ice pressure.

2. Plating materials in rudders and rudder horns are to be in accordance with 204.

3. In Icebreakers and Arc4 ~ Arc6 class ships the nozzle rudders shall not be fitted. In Arc1 ~ Arc3 class ships the arrangement of the nozzle rudder without the lower pintle in the solepiece is not permitted.

302. The requirements of Rudder

1. The rudder force (kN) are to be in accordance with Pt 4, Ch 1, 201. of the Rules Classificaion of Steel Ships and shall not be less than determined by the formula.

for the

(kN)

where

= factor of rudder force, refer to Table 3.37

= rudder area(m2)

Table 3.37 The factor of rudder force,

2. The ships that are subject to this chapter are to be in accordance with the requirements of rudder of Pt 4, Ch 1 of the Rules for the Classificaion of Steel Ships with rudder force (kN) determined by Par 1.