Effects of Hull Fouling on Cruise Ships Study

Press Release
Friday, October 05, 2012

Eniram collected data from + 60 cruise vessels & 38,000 sea days to highlight the financial impact of fouling across different sea areas.

Eniram Limited, the Finnish provider of real-time decision support solutions for the shipping industry, has revealed its analysis on the effects of hull fouling on cruise vessels in different sea areas.  This study also takes into account the impact of washing and dry docking on fouling by using data from over 38,000 operative sea days complemented with temperatures and salinity databases.

Eniram’s landmark study on 60 cruise ships (90-120.000 GRT) sailing through a variety of sea areas is one of the most comprehensive of its kind due to the volume of data collected and high frequency of observations, up to 25 per second. The sea areas included in the study are the Caribbean, coastal seas round California and Alaska as well as the Mediterranean and the Baltic.

The results reveal the high levels of fouling faced by the industry and in particular indicates the considerable differences in fouling build-up between cruising areas, with the Caribbean causing on average the most fouling and the Alaskan area the least.

Eniram created benchmarks for fouling to help ship owners and operators estimate the impact of operating in different areas. This shows that the financial implications of operating in areas with a heavy development of fouling could increase costs close to $500,000 per year on a single cruise vessel.

Data collected to understand the effects of dry and in-water cleaning indicated that even though as a combined figure, the first and the second wash decreased the added power consumption by 2% depending on the coating, fouling continued to increase quite rapidly after the washes, and brushing removed some parts of the coating from the hull. On the other hand, dry dock cleaning had a significant impact on fouling, reducing it by 5%.

In order to ensure the fairest possible results, the sample size of over 60 cruise vessels only took into account vessels that were sailing for a minimum of 30 days in the same area, so as to avoid the interference of possible vegetation from other areas. Furthermore, vessels that were clearly identified as showing unusual fouling results –such as a higher degree of coating erosion– were discarded and excluded from the study.

Henrik Dahl, CTO at Eniram highlighted that “The ability to measure hull fouling build up and its financial consequences stems from Eniram’s onshore performance monitoring tools and analysis skills using data obtained from the onboard Eniram data collection platform. With Eniram tools the crew is able to accurately identify at all times all the factors that directly affect a vessel’s fuel consumption and performance”.

To download a full copy of the study click here.
 

Maritime Reporter August 2014 Digital Edition
FREE Maritime Reporter Subscription
Latest Maritime News    rss feeds

People & Company News

TOTE, Saltchuk Secure Financing for Marlin Class Vessels

Maritime Administration to Provide Title XI Loan Guarantee for World’s First LNG Containerships Today, the U.S. Maritime Administration (MARAD) announced a $324.

Transocean: Fleet Update Summary

Transocean Ltd. today issued a monthly fleet update summary which includes new contracts, changes to existing contracts, and changes in estimated planned out-of-service

Barczak Joins Alan C. McClure Associates

Naval architecture and engineering firm Alan C. McClure Associates (ACMA) announced today that Registered Professional Engineer Nicholas Barczakhas joined the ACMA team as a naval architect.

Coatings & Corrosion

Biofouling Foiled: UV Light Harnessed for Biofouling Control

Since the first deployment of in-situ monitoring instrumentation, biofouling has been a problem. Without an effective solution, people have historically had to

TORM Contracts Albwardy for Diving Services

Danish product tanker carrier TORM A/S and UAE-based Albwardy Marine Engineering (AME), an Albwardy-Damen JV, have signed a Service Level Agreement for diving services in the UAE region.

PPG Offers SIGMASHIELD 1200 Coating for Shipping

PPG Industries' protective and marine coatings business is fulfilling growing demand for "ice class" marine coatings for hull protection with SIGMASHIELD® 1200 coating.

 
 
Maritime Careers / Shipboard Positions Maritime Contracts Maritime Security Pod Propulsion Port Authority Salvage Ship Electronics Shipbuilding / Vessel Construction Sonar Winch
rss | archive | history | articles | privacy | terms and conditions | contributors | top maritime news | about us | copyright | maritime magazines
maritime security news | shipbuilding news | maritime industry | shipping news | maritime reporting | workboats news | ship design | maritime business

Time taken: 0.1225 sec (8 req/sec)