Singapore-based maritime technology firm GILLS PTE LTD has been awarded approval in principle (AiP) from classification society Bureau Veritas (BV) for its underwater hull air lubrication system.
The AiP covers the design of the system and installation onboard vessels as reviewed against the Bureau Veritas Rules for Steel Ships NR 467 (as updated in January 2021).
GILLS, which stands for gas injected liquid lubrication systems, deploys NACA profiles developed by the National Advisory Committee for Aeronautics to create self-generating micro-bubbles for ‘turbulent modulation’ which has a ‘hull-tightening’ effect, reducing drag and energy requirements.
The self-generating nature of micro-bubble clouds with no requirement for air-compression and additional energy requirements is one of the features of the GILLS system.
The hull tightening effect of the GILLS technology is a phenomenon of the various factors and forces acting on the microbubbles generated by a GILLS vortex generator installed at the bow of the ship. These factors and forces can be identified as the following:
“The GILLS Air Lubrication System is a nature based innovative technology that not only uses the micro bubbles to reduce the drag, emissions, fuel and biofouling, but it also utilises the ship speed to generate a negative pressure and minimizes the required external compressor power,” explains Peter Kneipp, Managing Director of GILLS PTE LTD.
“We are greatly confident that GILLS will be a valuable contributor for practically every ship type to improve the EEDI /EEXI IMO Index. GILLS can also be retrofitted to existing ships as well as new vessels.”
“The collaboration with GILLS is timely as the industry seeks performance improvements in line with the EEXI energy efficiency targets. Pressure is building to find cost-effective solutions that work and can be financed,” said David Barrow, SE Asia Zone Vice-President for Bureau Veritas.
“The GILLS systems has been installed on an existing vessel for a number of years now and the vessel owners are confident of the fuel savings are approximately 10%.
“The next step is a full-scale measurement and a validation exercise led by Bureau Veritas Solutions (BVS) to identify confirmed performance.
“BVS, our consultancy arm, is also working with GILLS to assess the potential of access to Singapore ‘Green Funds’ to provide financial support to owners considering using such energy-saving systems.”
Photo credit: Bureau Veritas
Published: 12 May, 2021
‘Economics of the shipping market will be the key driver enabling methanol to be adopted at a higher pace going forth over next couple years as market begins to return to more normal rates,’ states COO.
Integr8 Fuel injunction varied by Singapore Court to allow former employees to start work at Hartree Group in December 2022 following failure to produce evidence on biofuels development plans.
Variability of sources can affect the stability and performance of biofuel bunkers produced from these feedstocks, in turn leading to difficulties in meeting regulations and industry standards, shares Bryan Quek.
Top three positive movers in 2022 were Bunker House Petroleum Pte Ltd (+7), Eastpoint International Marketing Pte Ltd (+5), and Eng Hua Company (Pte) Ltd (+6); newcomer Sinopec Fuel Oil (Singapore) gets 19th spot.
Livestock carrier also involved in earlier bunker claim with Glander International Bunkering due to remaining unpaid fuel bill of approximately USD 116,000, according to court documents obtained by Manifold Times.
A blend of standard MGO and biodiesel, MGO B20 is distributed at the company’s floating kiosk CNC 5 which is located off the buoy of West Coast Pier; PS Energy has been stamped with globally recognised ISCC.
20 Jan 2023