What kind of garbage can be thrown overboard a boat?

Generally, it is illegal to throw any type of garbage overboard from a boat, as marine pollution is regulated by various laws, including the MARPOL Convention. However, certain types of waste, such as food waste, may be allowed to be discarded under specific conditions, such as being more than three nautical miles from shore. It's essential to adhere to local regulations and best practices for waste disposal to protect marine environments. Always check the guidelines applicable in the waters where you are boating.