Ballast takes many forms. The simplest form of ballast used in small day sailers is so-called live ballast, or the weight of the crew. By sitting on the windward side of the hull, the heeling moment must lift the weight of the crew.
The Principal-Agent Relationship. A principal-agent relationship is an arrangement between two or more individuals. Specifically, the agent of the relationship performs a task on behalf of the principal. This is often due to different degrees of knowledge and skills.
The power of the agent to bind the principal is usually legally referred to as authority. Agency created via an agreement may be a form of implied authority, such as when a person gives their credit card to a close relative, the cardholder may be required to pay for purchases made by the relative with their credit card.