Final answer:
Sailing vessels can face hazards related to dry ballast and fouling, parasites introduced with their host, and accidental introductions such as invasive species or pollutants.
Step-by-step explanation:
The hazards that are specifically hazardous for sailing vessels include:
- DBF - This refers to dry ballast and/or fouling associated with solid-ballast-carrying vessels. This means that sailing vessels that carry solid ballast materials can face hazards related to the ballast shifting or fouling, which can affect the stability and maneuverability of the vessel.
- HOST - This refers to parasites that have been introduced with their host. Sailing vessels can be at risk of introducing and carrying parasites that can affect the health and survival of marine organisms, which can impact the ecosystems they sail through.
- OTHER - This category refers to other accidental introductions, which can include invasive species or pollutants that can be unintentionally transported by sailing vessels, posing hazards to marine environments and ecosystems.