The International Maritime Organization (IMO) is a specialized agency of the United Nations which ensures the safety and efficiency of sea transport. It develops regulations that promote safe and cost-effective transport of goods on the oceans, so as to protect the environment, prevent pollution and also sustain the global trading system. Established in 1948, IMO works to develop common international regulations and standards relating to maritime safety, security, environmental protection and efficient ship operations.

IMO's primary responsibility is to ensure the safety of the vessels navigating on the world’s oceans. To accomplish this, it establishes global safety standards for ship construction and operations, such as the International Convention for the Safety of Life at Sea. Additionally, IMO works to reduce the risk of accidents by providing guidance on navigational and operational procedures.

Moreover, IMO supports the efficient global transport of goods by devising and improving transport regulations. It also develops international standards for the marine environment and plays a central role in the preparation and implementation of climate change initiatives.

A vital role of IMO is to facilitate regulation compliance, enforcement and implementation and facilitate harmonization of legislation among all national maritime authorities. Any international regulations made under the auspices of IMO usually take the form of treaties and conventions, which are then adopted by member states. Member countries are obligated to adapt and enforce the laws they are party to.

Funding for IMO comes from both member states and voluntary donations. The revenue generated from the levy scheme on Bunker Fuel Oil consumption, as well as fees generated by services and activities conducted by the Organization, also contribute significantly to the budget of the IMO.

The IMO currently has 174 member states and 3 associate states and is headquartered in London, United Kingdom. It is governed by the Assembly, which meets every two years and is composed of representatives from all the member countries. The Organization is also supported by an Executive Council of 40 members as well as various other committees and subcommittees.

Thus, IMO’s purpose is to ensure a safe, secure, efficient and environmentally-friendly navigational sea transport system. Through its regulations and initiatives, the IMO helps to promote global maritime trade as well as protect the environment.