Minimize Emissions and save Energy - Technical Solutions for Legal Requirements

01/25/2017 - 11:00-01/25/2017 - 12:15


Michael Baldauf
(World Maritime University)
Raza Ali Mehdi
(World Maritime University)
Michèle Schaub
(Hochschule Wismar, University of Applied Sciences: Technology, Business and Design)
Gerd Milbradt
(Hochschule Wismar, University of Applied Sciences: Technology, Business and Design)


Regulatory Framework (Part B)

Francesco Munari
Michael Baldauf

Shipping is a contributor to air pollution especially in coastal zones and harbor areas where many people are concerned. The urgent need for environmentally friendly or 'green' ship maneuvers rises from such concerns. That is why IMO has taken action and has established regulatory framework in order to ensure sufficient reduction of GHG emissions.

Technical solutions have been developed and introduced in order to realize ambiguous aims of IMO initiatives. Smooth introduction of innovative solutions supporting energy efficient ship operation requires thorough analysis of ship operation and adequately adapted technology and operators to effectively use dedicated technical systems.

Analysis of ship operation have shown that there is great potential to reduce emissions but to also save energy and fuel when ships are maneuvering during arrival and departure of ports and harbor areas.

During several field studies and observations on-board ships, maneuvering processes have been analyzed. Maneuvering begins with thinking ahead of a ship’s path and following this virtually planned path by adapting the control handles of the ship (rudder angle, thrusters, engine revolutions) in order to match the real ship’s positions and track with the virtual path in the navigator's mind. This practice implies a certain kind of trial and error strategy to find the suitable combination of rudder angle, thruster power and engine revolutions to realize the mental plan of the navigator. Often greater rudder angles, thruster and engine power is used because their specific effects are not known exactly enough. It is therefore assumed that optimized maneuvering regimes have potential to decrease the negative effects of high energy consumption and higher emissions and may potentially contribute reducing fuel consumption.

Basic studies have been carried out focusing on alternative maneuvering strategies supported by advanced assistance tools for planning, conducting and monitoring of maneuvers. In this paper, ongoing research work will be presented and the basic ideas and concepts of green maneuvering are described in the context of legal and operational requirements. Selected results of a case study on harbor maneuvers of a ferry and the development of tools to support simulation-based training and ship operation will be introduced.