IMO's new shipping regulations enter into force: What shipowners and operators need to know

The International Maritime Organization (IMO) has brought a comprehensive package of amendments to key maritime conventions and codes into force from 1 January 2026, introducing new requirements aimed at improving maritime safety, environmental protection and seafarer welfare. The changes affect shipowners, operators, managers, classification societies and flag administrations worldwide.

One of the most significant changes is the mandatory reporting of lost freight containers under the SOLAS Convention. Masters of ships must now report containers lost at sea without delay, providing details on the position, number of containers lost and whether dangerous goods are involved. The measure is intended to improve navigational safety, support container recovery efforts and reduce marine pollution.

The amendments also introduce mandatory training on preventing and responding to harassment, bullying, sexual harassment and sexual assault for seafarers under the STCW Convention and Code. The new competency requirements are designed to promote a safer and more inclusive working environment on board ships.

Several technical safety regulations have also taken effect. New SOLAS provisions establish mandatory safety standards for lifting appliances, anchor handling winches and associated equipment, while updated fire safety requirements strengthen protection in ro-ro and special category spaces. Additional amendments to the International Maritime Dangerous Goods (IMDG) Code, IGF Code, IGC Code, Life-Saving Appliances (LSA) Code and Polar Code introduce revised requirements for dangerous goods transport, alternative fuels, life-saving equipment and ships operating in polar waters.

For the shipping industry, these changes extend beyond regulatory compliance. Mandatory container-loss reporting is expected to improve transparency and navigational safety, while updated technical standards will enhance ship design and onboard safety. The expanded focus on seafarer welfare also reflects the IMO's growing recognition of the human element as a critical component of safe and sustainable shipping.

Key IMO amendments effective from 1 January 2026

• Mandatory reporting of containers lost at sea under SOLAS.

• STCW training requirements on preventing harassment, bullying and sexual assault.

• New safety standards for lifting appliances and anchor handling equipment.

• Updated fire safety requirements for ro-ro and special category spaces.

• Amendments to the IMDG, IGF, IGC, LSA and Polar Codes.

• Revised requirements supporting safer carriage of dangerous goods, alternative fuels and polar operations.

Why it matters

Although many of the amendments are technical, together they represent one of the most significant annual regulatory updates in recent years. Shipping companies should review their Safety Management Systems (SMS), onboard procedures, crew training programmes and statutory compliance plans to ensure vessels meet the new IMO requirements from the start of 2026.