CASE STUDIES

46,067DWT IMO II CHEMICAL AND PRODUCTS TANKER CALYPSO

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A copper-free coating product containing Selektope was applied to the side walls of the 2010-built, 46,067dwt IMO II chemical and products tanker vessel Calypso during its first five-year survey at the Singapore yard Sembcorp.

The hydrodynamic analysis of performance data during the trial was carried out by independent party Propulsion Dynamics. Operating rates were measured by fuel oil consumption and power output. After 12 months, the vessel was measured to have increased its resistance to fouling by a total of 3% compared with a benchmark new vessel that would see an increase in resistance of 5-10 %.

The trial on the Calypso also showed that the increase in resistance came mainly from the propeller, 3%, with the remaining resistance being measured on the hull. Very encouraging results for this game-changing antifouling ingredient.

The benchmark is made up of a wealth of different vessels with different coatings related to the size of the database within Propulsion Dynamics. This benchmark allows for the comparison of one ship to a large variety of similar vessels, thus addressing the problem case that it is not possible to compare equal ships to equal ships when analysing and contrasting coatings performance.

STATIC TESTS – WEST COAST OF SWEDEN

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Comparative results after 7 months in static conditions on the west coast of Sweden.