This final thesis consists of two parts. The first part of the paper refers to corrosion protection on boats. Introductory part describes the evolution of protection against corrosion throughout maritime history and the continuous search for better materials to ensure the protection of the vessel. The introduction continues with descriptions of various different types of corrosion effects on the structure of the boat and the possible causes of their occurrence. The main topic of protection against corrosion is cathodic protection through sacrificial anodes or impressed current cathodic protection. The paper describes different materials used for production of anodes, their required quantity, installation and distribution on various types of boats in different conditions. The last part of corrosion protection consists of a equipotential bonding system, problem description of stray currents and devices that prevent their influence on the boat. The conclusion describes the importance of taking measures to protect boats from the effects of corrosion by combining cathodic protection with coatings and paints. Second half of the thesis focuses on protection of boats from lightning strikes. After the historical introduction and explanation of how lightning is formed, the paper continues with the description of the lightning protection system and all elements that are part of the system. The importance of surge protection during the storm for all electrical installations on the boat is described further in the paper alongside with the appearance of various phenomena caused by electricity. Last part of the paper covers safety on the boat during the storm and the conclusion. The main concept of the second half of the paper is the establishment of a safe lightning protection system on the boat for the purpose of preserving human life and the structure of the boat.