• 2020 February 18 17:27

    Jotun Marine: Proactive measures needed to improve hull performance

    While owners have long recognised the link between clean hulls and lower fuel costs, lack of reliable data has slowed investments in optimising hull performance. But with improved sensor technologies and data analysis tools, hull performance is getting a second look.

    Owners seeking to lower fuel costs and comply with pending regulations on emissions and invasive species often look to equipment manufacturers to meet their needs. From new efficient engine designs to alternative fuels, scrubbers to ballast water treatments systems, owners face some expensive decisions. But with more vessels now equipped with onboard sensors and standardised tools to measure speed loss due to hull fouling, owners and fleet managers now have access to reliable data measuring the impact of hull and propeller performance over time.

    10-year statistics: The link between hull performance and vessel efficiency is much stronger than previously thought

    According to Jotun Marine Analyst Manager Manolis Levantis, Jotun Marine has collected data on hull performance from different types of vessels on different trades for more than decade. “Jotun’s Hull Performance Solutions requires participating vessels to install sensors to enable performance monitoring based on standardized principles (ISO 19030) for the measurement of changes in hull and propeller performance,” he explains. “Since then, the company has amassed one of the industry’s most comprehensive data sets on hull performance.”

    Levantis says that hull and propeller performance have a much larger impact on vessel efficiency than previously thought. “We estimate that the average yearly speed loss for all vessel types and trades, regardless of what anti-fouling is used, is about six percent,” he says. “For a typical bulk carrier, compensating for this speed loss would require an increase of power of up to 18 per cent, resulting in higher fuel costs and GHG emissions.”

    Levantis is careful to note that Jotun’s data is taken from owners and fleet managers who are committed to improving hull performance. “When you consider that low freight rates over the past five years have discouraged many owners from investing in premium anti-foulings or sensor technologies, the market speed loss average may exceed six per cent.”

    Case study: Fuel savings of USD 1.5 million

    While Jotun does not usually share customer data, the company worked in cooperation with Gearbulk in 2016 to measure hull performance. GearBulk, which operates the world’s largest fleet of open hatch gantry and semi-open jib craned vessels, shared historical performance data from the cargo ship Penguin Arrow dating from January 2000, allowing for a full comparative analysis.  

    After installing sensors and applying Jotun’s premium anti-fouling, (SeaQuantum x200), Jotun was able to monitor speed loss over a 60-month period. The results indicated a speed loss of just 0.5 percent, resulting in an estimated fuel savings of USD 1.5 million and a corresponding reduction of CO₂ emissions of 12,055 tonnes.

    “Our data conclusively proves the link between hull performance and fuel efficiency,” says Levantis. “And with the IMO’s pledged to reduce the total annual GHG emissions by at least 50 per cent by 2050 compared to 2008, we believe hull performance will play a greater role in helping owners and fleet managers comply with pending regulations.”

    The cost of fouling: Significant CO2 emissions and claims related to charter party agreements

    According to the Clean Shipping Coalition, the only international environmental organization that focuses exclusively on shipping issues, poor hull and propeller performance accounts for around 10 per cent of the world fleet’s energy consumption, translating to about USD 30 billion in additional fuel costs for the world fleet, every year. Burning this fuel adds 0.3 per cent to shipping’s total greenhouse gas output, which, according to the IMO, is about 2.2 percent of the world’s total – about the same output as Germany.

    Failure to prioritise hull performance not only result in additional fuel costs, but also may expose owners to claims related to charter party agreements or additional costs for periodic underwater hull cleanings. At the same time, port authorities in Australia, New Zealand, California and the EU have become increasingly sensitive to biofouling risk, placing new requirements on owners.  

    Next generation hull maintenance: Shipping seeks a more proactive approach

    While new anti-fouling technologies have drastically reduced speed loss between drydockings and more ports are offering advanced ROV hull cleaning services, pending regulations on emissions and invasive species will require a more proactive approach to hull maintenance. Increasingly, owners are seeking solutions to manage hull performance more effectively between dry dockings, when fouling occurs. After all, removing slime before marine organisms can attach to the hull would not only improve vessel efficiency and lower GHG emissions, but also help control the spread of invasive species.

    “The industry now has access to historical data that makes a strong business case for optimising hull performance,” says Levantis. “As an analyst, I believe what can be measured can be managed – we don’t have to guess anymore.” 




2020 April 8

12:42 Shipping credit outlook revised to negative: cash crunch worsens as Covid-19 disrupts trade
12:05 Inland terminals at the Port of Hamburg hit by the corona crises differently
11:30 IAPH Tokyo secretariat transited to remote work from home
11:05 SAFEEN acquires its largest service vessel to date
11:02 BC Ferries adjusted service levels due to Covid-19 pandemic
10:39 ABB increases remote support for ships to help customers during the COVID-19 outbreak
10:38 Port of Gdansk actively supports fight against coronavirus
10:16 Tallink Grupp’s vessels Megastar, Galaxy and Baltic Princess suspend passenger transport to Finland
09:53 MABUX: Bunker market this morning, Apr 08
09:40 Bunker prices start going up at the port of Saint-Petersburg, Russia
09:19 Baltic Dry Index is down to 596 points
08:47 Golden Ocean announces appointment of Ulrik Uhrenfeldt Andersen as CEO

2020 April 7

18:38 RF Government makes big decision to quit transshipment of NOVATEK’s LNG in Norway
17:27 BashVolgotanker opens navigation with first tanker leaving Samara for Kavkaz
17:03 IADC moves its seminar and course to 2nd half of 2020
16:49 RF Navy’s oceanographic research vessel "Admiral Vladimirsky" arrived in the Durville Sea
16:05 ECSA and ETF launch joint project WESS
15:51 Bunker prices are flat at the Far East ports of Russia (graph)
15:43 Port of Rotterdam adds Boxinsider to Portbase
15:28 Dredging works at LNG terminal in Klaipeda Seaport completed ahead of schedule
15:04 VTT to assess bio- and waste-based oils suitable for power plants and ships
14:43 Nordic Investment Bank is sponsoring expansion of Klaipeda Seaport
14:20 AET and TOTAL agree time charter for two LNG dual-fuel VLCCs
13:52 Rosmorport changed tariffs on crew boats services rendered in seaports of Eysk and Temryuk
13:29 Krasnoye Sormovo shipyard introduced short-time operation till 30 April 2020
12:54 Rosmorport announces tender to reconstruct coastal facilities of Vanino-Kholmsk ferry service
12:26 Rosmorport announces tender to build and reconstruct port infrastructure in Nikolskoye settlement
11:47 Hydrographic vessel of RF Navy’s Pacific Fleet continues its long-distance cruise to Antarctica
11:09 Hurtigruten temporarily suspends operations
10:25 Brent Crude futures price is up 3% to $34.04, Light Sweet Crude – up 3.53% to $27
10:08 Stena Line to furlough 600 employees and make 150 redundant in UK and the Republic of Ireland due to COVID-19
09:53 Extraordinary security measures undertaken by PORT FLEET operating in Big Port St. Petersburg
09:34 Nuclear-powered container carrier Sevmorput unloaded cargo for Arctic LNG 2 project
09:16 Baltic Dry Index is down to 604 points
09:02 Austria's overseas traffic via Hamburg remains stable
08:46 MABUX: Bunker market this morning, Apr 07
08:19 LR chosen for LNG Canada export terminal project in Kitimat

2020 April 6

18:37 Okeanis Eco Tankers announces three year VLCC time charter
18:06 Bureau Veritas helps to manage risk thanks to digitalized inspection services
17:45 Turnover of DeloPorts terminals in January-March of 2020 reached 2.6 mln tonnes, up 44% YoY
17:39 The production of Tallink’s new car and passenger ferry MyStar has started at Rauma shipyard
17:12 Maersk Container Industry signs first Star Cool milestone contract with Evergreen
17:06 Lloyd’s Register completes six-day, three-person audit for marine and offshore component and equipment business Whittaker Engineering
16:30 8,800 cbm of material dredged in Korsakov seaport
16:08 MABUX Digest: Top events on global bunker market: Week 14
16:06 CMA CGM cancels PSS for cargo from East Africa to Asia
15:59 The Korean Register releases the latest updated version of KR-CON
14:50 DNV GL’s new MMC unlocks unprecedented machinery efficiencies and insights
13:57 Technical fleet of Moscow Canal to begin navigation season on April 24
13:33 Construction of Tallink Grupp’s newest eco-friendly LNG-powered shuttle ferry to begin at RMC shipyard in Rauma
12:46 World Ports Covid19 Information Portal established
12:22 IMO issues guidance for delays in newbuild vessel deliveries due to COVID-19
12:00 Nanjing Jinling Shipyard launches the second of G5GG ro-ro vessels for Grimaldi Group
11:18 Average wholesale prices for М-100 HFO fell to RUB 6,299 in RF spot market
11:00 Port of Singapore remains open amidst additional precautionary measures
10:21 Brent Crude futures price is down 1.61% to $33.56, Light Sweet Crude – down 3.18% to $27.43
10:09 NovaAlgoma Short Sea Carriers takes delivery of new mini-bulker
09:50 CIMC Raffles cuts first steel for largest Ice Class ro-ro
09:34 MABUX: Bunker market this morning, Apr 06
09:32 RF Government approves draft Energy Strategy until 2035