7.7 Unseaworthiness-Causation Defined is the legal concept that states that a vessel must be fit for its particular purpose in order for it to be considered seaworthy. This principle applies to all vessels, regardless of size or purpose. Generally, this includes the vessel being structurally sound, properly equipped, and properly manned. If a vessel fails to meet these standards, then the vessel is considered unseaworthy and the owner can be liable for any damages or injuries caused by the seaworthiness. There are three types of unseaworthiness-causation defined: actual, constructive, and implied. Actual unseaworthiness-causation is when a vessel fails to meet the standard of seaworthiness on the day of the injury or incident. Constructive unseaworthiness-causation is when a vessel fails to meet the standard of seaworthiness due to the lack of reasonable care or maintenance. Implied unseaworthiness-causation is when a vessel fails to meet the standard of seaworthiness due to a defect or other condition that was known to the owner or operator.