Indonesia is an archipelago that stretches from Sabang to Merauke and consists of thousands of islands. To facilitate inter-island connections, the community needs means of transportation. One of them is sea transportation using ships, both passenger ships and cargo ships, which must consider safety and security. This includes insurable risks. Insurance companies can cover ship risks in two types of protection, namely marine cargo and marine hull. Marine cargo products provide protection against those to be shipped, while marine hull products provide protection for the ship itself. This study aims to identify the risks associated with receiving marine hull insurance, especially the material for making the hull and the size of the ship. These risks are part of internal operational risks. This research is a preliminary study of the application of risk management in a reinsurance company in Indonesia. The material discussed up to the creation of a risk map of the identified risks. The data used is the company’s secondary data from 2017 to 2018. The method used is a quantitative method in determining the level of risk and a qualitative method in determining risk treatment. This study identified two risks, namely the presence of wooden frame ships and the large number of medium-sized ships. Both have a medium level of risk, but the company still must mitigate these two risks, either accepting the risk or sharing the risk by reinsuring it.