Is there a difference between a saltwater boat and a freshwater boat?
Accordingly, can you use the same boat for freshwater and saltwater?
The answer is yes, any boat that has seen time in salt water should be thoroughly rinsed with fresh water and should have its engine flushed. Keep in mind that boats used in saltwater have a shorter life expectancy than the boats used in fresh water.
Hereof, what does salt water do to boats?
However, corrosion (like boat cancer) occurs quickly and can be quite devastating. Freshwater doesn't pose many problems to boats, but saltwater can corrode metal up to 10 times faster. Not only that, boating on the ocean can be rough on your hull, especially if it is designed for inshore boating.
Most boats, especially those commonly used in freshwater, have a hull strength that was designed to be close to shore. Thus, most any boat can go into salty, ocean waters. Boaters, however, must be aware that rough waters and rocky shores can pose danger if the hull strength of your boat is not rated for such.