Sec. 64.3 



SHIP-DESIGN SPECIFICATIONS 



451 



Fig. 64. B Proposed Maneuvering Diageam for ABC Ship in Port Bacine 



words, the ship shall possess dynamic stability of 

 route. 

 (39) A limiting small rudder angle not exceeding 3 deg 

 shall suffice for good manual steering In smooth, 

 deep water and neghgible wind, at all speeds over 

 one-half of the sustained speed, with right or left 

 variations in yaw not to exceed 2.0 deg. This shall 

 include all displacement and trim conditions likely 

 in open-sea running. 



(40) A rudder angle not exceeding 7.5 deg shall suffice 

 for steady, straight-course running in straightaway 

 reaches of the canal at Port Amalo and the river at 

 Port Correo, with from 3 to 4 ft channel-bed clearance 

 under the ship 



(41) The ship shall be controllable when underway in 

 heavy weather at whatever speeds and courses can 

 be maintained in that weather. 



