Case study 3

Home / Case Study 3

46,067DWT IMO II Chemical and products tanker – 5 years

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.

After a 60-month sailing interval, the Team Tankers-operated tanker, Team Calypso displayed an average weighted speed loss of only -0.7%. An underwater hull inspection reported almost a complete absence of hard fouling in any of the vertical sides or flat bottom of the hull, despite the vessel operating predominantly in some the world’s most severe biofouling hotspots.

Team Calypso
OLYMPUS DIGITAL CAMERA

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.

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.

Twenty-four months out of drydock, Calypso’s increased total resistance was calculated to be 7%, compared with a benchmark new vessel that would see an increase in resistance of 10-20%. This 7% increase in resistance corresponds to a mere 2% speed loss relative to sea trial performance. The increase in resistance from the propeller was 2%, with the remaining resistance being measured on the hull. Additionally, the independent analysis confirmed that the development rate of added resistance for Calypso is 0.1 % (normally 0.5% to 1.5% is expected).

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.

IMG_0846
Latest News & Blog
22 jan 2021 Niche Areas

Biofouling & Niche Areas: Managing an Expanding Issue

Marine biofouling build-up on ship hulls and submerged niche areas may also be out of sight and out ...
1 jan 2021 Outfitting

Barnacles: between a rock and a yard place

Any vessel lying idle for a period of time in these waters is at significant risk of unwelcome marin...
31 dec 2020 News

Selektope® to protect new Mercy Ships hospital ship

Mercy Ships is a charitable organisation whose volunteers provide medical treatment and undertake ur...
24 dec 2020 Decarbonisation

Removing the biofouling barriers to a low-carbon future

Hard fouling organisms, shell-forming creatures such as barnacles, represent a huge risk to vessel p...
Newsletter

Sign up to get latest Selektope® news and updates directly to your inbox.

Paint manufacturers

For paint manufacturers

Push the boundaries of coating innovation.

Ship managers

For ship owners & shipyards

Unlock the benefits.