Expected to save 6 tonnes of fuel per day Flettner Rotor ships since 1924 The rotor ship Buckau (1924) The rotor ship Barbara (1926) experimental rotor vessel normal freighter ship 7 Rudder Design • Gate Rudder consists of two asymmetrical rudders placed in parallel either side of the propeller instead of placing behind the propeller Gate Rudder Rudder bulb / Costa bulb • Twisted Rudder is a type. [...] • Rudder bulb / Costa bulb consists of a bulb attached on the rudder in line with the propeller resulting to smoother inflow to the rudder. [...] In the future it could replace conventional antifouling coatings 14 by HEMPEL Air lubrication System (ALS) CAPEX 3.5M$ - 4M$ Up to 9% net savings Air lubrication reduces the drag force on the wetted surfaces of the hull due to the lower viscosity of air compared to water (it reduces the friction resistance of the FOB). [...] § In shipping, seafarers are required to keep up with the rapid technological growth and develop specific hard skills enabling them to effectively handle and use the newly introduced fuels, operate advanced equipment and ensure the smooth operation of a ship that looks less and less like the traditional ship that they are familiar with. [...] 43 Conclusions Soft and hard skills in maritime Hard skills are the tools that will enable us to understand and master Hard skills the technology for the benefit of our society.
- Pages
- 45
- Published in
- Greece
