- Hopper tanks are classified into bottom hoppers and top heavy wing tanks.
- For bottom hoppers, the main purpose is to take ballast, so as to rapidly increase the vessel immersion, simultaneous reduction in metacentric height, and a change in Centre of gravity.
- For top heavy wing tanks, the idea is to rapidly correct list of the vessel and act as active ballast tanks, for vessels such as Lakers where passages are narrow and cargo loading is often scattered.
- Except for this, they contribute in cargo loading also because the side slopes allow the cargo to slide off and collect at the centre, thereby making the cargo collection easier at the end
- Also, the hoppers are strengthened by additional transverse and longitudinal members, thereby supporting the port and starboard fuel tanks, and also distributing the cargo loading in a dynamic way to make sure the load is not concentrated at one point for higher loading speeds
The electrohydraulic control mechanisms of the ME engine replace the following components of the conventional MC engine: Chain drive for camshaft Camshaft with fuel cams, exhaust cams and indicator cams Fuel pump actuating gear, including roller guides and reversing mechanism Conventional fuel pressure booster and VIT system Exhaust valve actuating gear and roller guides Engine driven starting air distributor Electronic governor with actuator Regulating shaft Engine side control console Mechanical cylinder lubricators. The Engine Control System of the ME engine comprises: Control units Hydraulic power supply unit Hydraulic cylinder units, including: Electronically controlled fuel injection, and Electronically controlled exhaust valve activation Electronically controlled starting air valves Electronically controlled auxiliary blowers Integrated electronic governor functions Tacho system Electronically controlled Alpha lubricators