Chemical tankers
General information
Chemical tankers are developed to carrier a wide range of different chemicals and have an average capacity of 37,000 TDW and an average overall length of 180m. The design of today’s Chemical tankers is characterised by a relatively high speed and thus high propeller loading and high block coefficients with a relatively full aft body. This requires a low overall resistance and related good powering performance but also an excellent after body design, with a good flow towards the propeller(s) and rudder(s), without flow separation. During operation the ships sail at different loading, and therefore the design optimisation is characterised by finding a compromise between different draughts.
The Chemical tankers are mostly sailing with a traditional single screw propulsor. Due to the chemicals onboard, safety on board during transit and harbour operations is also a very important issue.

Services & Activities
The Ships Powering Department is involved in the development of the hull design, the power optimisation for a range of draughts and the cavitation, noise erosion observation.

The Manoeuvring & Seakeeping Department verifies the low and high speed manoeuvrability and controllability and investigates the seakeeping performance in all weathers and all sea states.
Due to the recent trend, in which the fore ship becomes slender and the aft ship full, special attention is needed on the steering capability.

The Nautical Centre MSCN offers training of the crew by simulating approach manoeuvres on a full size bridge. But also Quantitave Safety Assessments of the nautical operations and Real-time simulations are carried out to reduce risks to a minimum.

The Trials & Monitoring Department is involved in full-scale measurements of ship performances, cavitation observation, pulse and loads measurements.

Facilities & Tools
Chemical tankers are tested in the following MARIN facilities:

Chemical tanker hull form Design Optimisation is performed with the aid of the following tools:

Chemical tanker behaviour is simulated with the following tools:

Software Sales
Some software tools are available for commercial use outside MARIN. A complete overview of these software tools for sale can be found under Software Sales.

Experience
The list below gives a small overview of company for which LNG carrier model and full scale tests were carried out at MARIN:

Commercial projects on behalf of:

  • Van der Giessen de Noord N.V.
  • Daewoo shipbuilding
  • Malaysia shipyard
  • Danyard A/S, Denmark
  • Astilleros Espanoles
Most recent Chemical tanker related papers presented by MARIN:
(complete overview of papers can be found under Publications)

Optimization of a Chemical Tanker with Free-surface Viscous Flow Computations
A. van der Ploeg, B. Starke, C. Veldhuis, PRADS, 2013

Optimization of a Chemical Tanker and Propeller with CFD
Van der Ploeg, A. and Foeth, E.-J., ECCOMAS Computational Methods in Marine Engineering V (MARINE 2013), Hamburg, 2013

Ship Design for Minimal Fuel Consumption in Everyday Use
G.P.J.J. Hagesteijn, P.M. Hooijmans, Design and Operation of Tankers, 2011

Most recent Chemical tanker articles written for MARIN Report:
(complete overview of articles can be found under Publications)

IMO Minimum Power Requirement - A joint way ahead in adverse conditions
Johan de Jong, MARIN Report, 2014

Proven concepts re-emerge in a new era of ultra large container ships
Patrick Hooijmans, MARIN Report, 2013

Retrofitting for energy savings and emissions reduction
Patrick Hooijmans, MARIN Report, 2013

Design for Sea - Design for Efficiency
Maarten Flikkema, MARIN Report, 2013

MARIN examines effects of passing ships
Willemijn Pauw, MARIN Report, 2012

Contact
For more information on how MARIN can help your organisation with Chemical tankers, please contact:

For resistance, propulsion and cavitation issues: Ships Powering Department
For manoeuvring, stability and seakeeping issues: Manoeuvring & Seakeeping Department
For simulation issues: MSCN
For full scale measurements: Trials & Monitoring Department

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