Cargo capacity
Deadweight
Service speed
Fuel consumption
About FKAB L22
The FKAB L22 is a high-efficiency, Ice classed 1A, Tier III LNG bunker vessel designed for optimized performance in bunkering LNG in the most efficient way. A single screw propulsion system with two LNG cargo tanks of bi-lobe type, IMO type “Independent Type C”. F-Bow hull form to ensure good performance in waves and calm water and an estimated EEDI > 50% below the 2025 Phase III requirements. The vessel is equipped with a Gas Combustion Unit of 27,7 MW that will enable the vessel to perform cool down and warming up services to other vessels fuel tanks or cargo tanks.
The FKAB L22 sets new benchmarks in sustainability within LNG supply chain, operational efficiency, and fuel optimization, ensuring long-term performance and environmental compliance.
WHAT WE DID
For the L22 FKAB Marine Design provided:
Used the experience and feed back from the success of the L8 Coralius Flexi Bunker feeder, to develop this new design, with larger cargo capacity, lower fuel consumption and low emission technologies.
Integrated a Gas Combustion Unit of 27,7 MW to enable the vessel to perform cool down and warming up services to other vessels fuel tanks or cargo tanks which provides a significant benefit to the vessel performance and customer offerings as the vessel can offer cooling and warming services to a wider range of LNG-fueled vessels and LNG carriers, enhancing its market competitiveness.
Incorporated a hybrid battery pack for UPS & peak shaving for both main engine and auxiliary engines.
Through a efficient hull shape and energy saving measures the estimated EEDI is >50% below the 2025 Phase III requirements.
• Length over all 112.9 m
• Length between PP 108.4 m
• Breadth mld 19 m
• Depth mld 10 m
• Depth to upper deck 13.0 m
• Design draft 6.0 m
• Scantling draft 6.0 m
• DWT design draft 3900 tonnes
• DWT scantling draft 3900 tonnes
• Cargo tank 7800 m3
• Fuel oil 140 m3
• Urea tank 50 m3
• Domestic FW 50 m3
• Tech. FW 50 m3
• Batteies 420 kWh/600 kW
• ME MCR 4000 kW x 750
• Type 4 stroke
• Design Speed 14.0 knots
at 75% of MCR 15% S.M.
• Hot water boiler 1000 kW
• Main gensets 2×1100 kW
• Shaft generator 1200 kW
• Cargo pumps 4×250 m3/h
• Discharge rate 1000 m3/h
• Ballast pump 2×350 m3
• Hose cranes 2tx20 m
• Accommodation 15+1 P
• Bow thruster 1×800 kW
• Stern thruster 1×500 kW
DNV 1A1, Tanker for liquefied gas Ship type 2G (-165ºC, 500kg/m3 4,5 barg), Gas
Fuelled LNG, E0, ICE 1A, TMON, BIS, NAUT-AW, COMF V (3) C(3), RP(B,25%), IWS,
Recycle, DAT(-30) CLEAN or other IACS class with equivalent notation.
This state-of-the-art bunker vessel is an important investment in our ability to continue to deliver the quality service our customers expect from us now and in the future.
– Mika Wiljanen, CEO Gasum
Source- Sirius shipping news Feb 17th 2025
RESULTS AND IMPACT
The dual-fuel propulsion system and shaft generator integration and controllable pitch propeller through reduction gear box withPTO/PTI/PTH together with the hybrid battery reduce fuel consumption and improve operational flexibility.
The Gas Combustion Unit will enable the vessel to perform cool down and warming up services to other vessels fuel tanks or cargo tanks so the vessel can vessel can pre-condition LNG tanks by cooling them down before bunkering, reducing boil-off gas (BOG) losses and improving fuel transfer efficiency. It also enables controlled warming up of tanks after LNG discharge, preventing thermal shock and structural stress.
A full UPS backup with a 400 kWh battery prevents blackouts, improving onboard safety and efficiency.
IMAGE GALLERY
CASE STUDIES
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