This work deals with the issue of applying corrosion protection rules on ships, with emphasis on ships carrying chemicals that carry aggressive cargoes, making them particularly vulnerable to corrosion. The work consists of 4 parts: 1 Introduction - where a historical review of material use and anti-corrosion was carried out, as well as problems with ships caused by corrosion, with a hypothetical hypothesis. 2 The second part deals with the rules of the Croatian Register of Shipping relating to the fight against corrosion. The processing of these rules covered the types of protection, as well as types of corrosion, including corrosion protection planning. Particularly dealt with the most sensitive parts of the ship, which are most susceptible to corrosion. 3 The third section deals with the technology of ship hull protection, with emphasis on ships for the transport of chemicals and the protection of cargo tanks. 4 Dissccusion that confirms the introductory hypothesis. 5 Conclusion By elaborating these points, it is clear that there are effective corrosion protection methods. The extent to which the ship will be of high quality will depend on the amount of the vessel's investment as well as the crew's knowledge.