Table of Contents #4.2 The operator is able to:
A: Turn the boat at planing or cruising speed... B: by assuming a new heading 45° to port followed immediately by a turn 45° to starboard using appropriate throttle control. NOTE: This skill is intended to maneuver around an object in the water.
Understanding the Element
• Planing or cruising speed turns are routine maneuvers and therefore important for an operator to be able to demonstrate safely. This is also relevant because of the varied handling conditions that might exist across different boat types.
• This skill involves turning the boat in both directions. • Heading means the direction in which a boat is being steered.
• This skill is about maneuvering around an object in the water and resuming the original heading, whereas “Element 4.6: Make course alteration...” is about changing course and remaining on a new heading.
Designing Instruction
• Design instructional activities to take place at planing or cruising speed to help reduce risks when operators are learning the skill.
• Teach the importance of maintaining lookout while changing heading.
• Teach importance of boat handling characteristics and how to recognize the need to change speed to maintain control while exercising the maneuver.
• Several components are involved in this element such as rate of turn, adjusting speed if necessary, and adequate lookout.
• Ensure the operator provides information to any passengers on board before engaging in turn.
• “Digging a chine” (see rubric, below) occurs when chine or sharp lower edge of a hull catches or trips on a wave resulting in a loss of lateral stability.
• “Ventilation” (see rubric, below) refers to the phenomenon that occurs when air is drawn from the surface and passes through the propeller. The propeller loses flow or grip on the water and the engine is allowed to speed up. The air is allowed to enter the prop stream as the boat rolls toward the turn, and the propeller actually moves closer to the surface.
Assessing Performance Level
Successful Performance
3 Needs 2 Improvement The operator:
Steers boat accurately and smoothly through 45° turn in one direction, holds stable on heading, and then turns back in opposite direction 45°. Warns passengers of pending change in direction. Starts and stops turns at desired headings. Uses appropriate rate of turn for conditions. Maintains speed through turn with throttle. Maintains proper lookout before commencing and throughout entire maneuver.
The operator: Steers boat through turns with varying rates of speed. Warns passengers of pending change in direction. Over- or understeers turn by less than 15°. Slides, digs chine or ventilates no more than once during turn and makes correction. Allows boat to slow unnecessarily during turn. Maintains proper lookout before commencing and throughout entire maneuver.
This Technical Support Document was produced in part through USCG grant funds to develop National On-Water Skills Standards. 38 ©2022 United States Sailing Association. Facilitated by Think First Serve.
Roughly 50 injuries per year occur during sharp turns.
Proficiency description
Element
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