Propulsion system upgrades Last Modified 27.05.2008

Propulsion system upgrades

Propulsion system upgrades from Wärtsilä

Retrofit

A retrofit is an upgrade of an existing remote control system and/or an upgrade of the mechanical parts of the propulsion system. A retrofit optimises the entire installation resulting in better accuracy and an up to date system.

After being in use for years, the elements of a system wear out and age as well as spare parts becoming obsolete and scarce. This causes unexpected maintenance and repair periods, resulting in high operational cost and off hire.

Control system upgrade

A new remote control system can contribute to considerable savings:

  • Decrease in fuel consumption by optimum scheduling of pitch and shaft speed
  • Reducing maintenance costs by avoiding too quick loading and unloading of machinery for running-up/down
  • Wave filter: more effective load control reduces wear of the engine and propulsor

We supply the Lipstronic 4000 basic and Lipstronic 4000 extended control system in line with IMO regulations and all classification societies. These are a compatible replacement system for all installed Lipstronic control systems and control systems from other OEM. It is a single source solution for all propulsion systems: controllable pitch propellers (CPP), waterjets, steerable thrusters, transverse thrusters, rudder control system & joystick system. It is a tailor made solution based on standardized components. It has at least same functionalities, is reliable and easy to use and easy to install (plug and play).

Mechanical upgrades

Examples of mechanical updates are:

  • Mechanical upgrade or replacement of the OD box
  • Mechanical upgrade of pitch positioner
  • Mechanical upgrade by means of new hub design and/or blade design
  • Upgrade by means of high efficiency nozzle
  • Upgrade of propeller shaft seals to environmental safe solutions

Propulsion Improvement

The fuel prices have risen considerably the last years, resulting in an increase of ship operating costs. To maintain the economic profitability of the vessel, we can provide a number of solutions to save fuel.

With modern design propellers, grinding and repair and modification of heavy running propellers considerable hydrodynamic improvement can be established, with attractive return on investments.

By the application of ducted propellers however, and especially the Lips high efficiency nozzle, an increase of free running propeller efficiency of 15% can be reached, with a payback period of 1 to 1.5 years.

Fuel saving devices are categorized on percentage of efficiency improvement:

Up to 5% improvement

  • Propeller polishing and/or repair of edge damage
  • Modern design propeller

Up to 10% improvement

  • Modern design propeller with increased diameter and low speed
  • Efficiency rudder
  • Propeller - engine interaction

Up to 15% improvement

  • Conversion of an open propeller to a ducted propeller.