The propeller is one of the most important and vulnerable parts of the boat engine. And it is more prone to failure and repairs with time being. Being a boat owner you might a come through a point where you had an emergency of changing the boat propeller which is necessary at the failure. That’s why it is advised to the boat owners to have a spare or extra propeller to avoid problems and emergencies. For more details, visit https://underwaterdivingtechniques.blogspot.com/2021/04/how-to-change-boat-propeller-by-yourself.html