The single point discharge system has emerged in order to meet the stricter and stricter requirements of the ocean pollution prevention for drilling rigs. The main design concept is to integrate the related discharge pipelines of the drilling rig to one discharge pipeline, that is, the single point drainage. The single point discharge system of a jack up drilling rig has been elaborated and analyzed. It can be used as referenc for the design of the single point discharge system for other drilling rigs.

Fuel oil system is one of the most important systems to maintain the operation of ships. It is responsible for the functions of fuel purification and fuel transfer, which plays a vital role in the safety and stability of ship operation. As the main power source of the medium transmission in the fuel oil system, the operation condition of the fuel transfer pump will also directly affect the overall operation of the ship. It carries out the fault analysis and treatment for the abnormal event of the fuel transfer pump on the ship combined with the on-site fault characteristics, AFT Fathom calculation results and disassembly inspection. It can provide reference for the troubleshooting of the marine fuel transfer pump.

In order to meet the latest sulphur limit requirements of the international maritime organization(IMO), the retrofitting of the exhaust gas cleaning system for a very large crude carrier(VLCC) are examined based on the original system and its characteristics, such as the equipment selection, power load analysis, pipeline system design and general arrangement. The sea trial results show that this retrofitting plan can meet the code requirements and the operation requirements of shipowers.

A semi-submersible drilling platform adopts the evaporative fresh water generator using the waste heat of the diesel engine jacket water. However, the fresh water generating quantity decreases significantly when the operation area of the platform changes. It analyzes the causation of the insufficient fresh water generating quantity in view of both design principle and field-measurement data, and proposes the corresponding solutions.