The Hamburg Ship Model Basin

Setting the Standard in Ship Optimisation

Video 100 years

Podded Drive Propulsion

AZIPOD Propulsion

HSVA has carried out ship model tests with podded drives since the beginning of development of this propulsion system. The work has included open water, resistance, propulsion, seakeeping and manoeuvring tests, as well as CFD calculations of the flow around the pod both with and without the propeller in operation.

For the "Costa Classica" conversion project testing was done with a booster pod system where all 4 European pod suppliers were involved. In 2000-2001 a new pod development from the USA, the Commercial Rim Drive Propulsor (CRDP) was successfully tested in HSVA's large towing tank and cavitation tunnel. Newer developments in testing techniques include the capability for carrying out pod open water tests at different angles of attack.

Special characteristics of Pod drives

  • Azimuthing thrust unit
  • Very high manoevrability
  • No external propeller shafting, thus more uniform wake distribution
  • Low propeller induced vibrations
  • Low noise level
  • Engine can be located more freely
  • Fewer restrictions on general arrangement
  • Electric motor
  • Very low speeds possible
  • Suited as booster drive
  • Increase in speed possible
  • Diesel-electric arrangement is required, if not anyway
  • Power losses of 5% - 8% compared with direct drive diesel engine
  • Higher Price
  • The torque of the electric motor is limited
  • Higher rpm is required
  • The optimal propeller efficiency cannot be achieved in some cases

POD Millenium 01

HSVA Model of Cruise Vessel "Millenium"

POD Millenium 02

Cruise Vessel "Millenium" / Chantiers de l'Atlantique with Rolls - Royce / Alstom Mermaid® drives

Contact @ Resistance & Propulsion (RP)