Sirius have ordered two new Ice Class 1A, 7999 DWT oil/chemical tankers at AVIC Dingheng shipyard in China.


Designed for performance

The design are born from Sirius long experience of building and rebuilding vessels to the standard, what we call “Sirius Standard”. During the past years, Sirius has built and rebuilt numerous vessels, that experience have been combined into a high-performing new design: EVOLUTION.

The  9 623,6 m (98%),   TIER III Oil Product Tanker for Chemicals (IMO II) and Oil products is designed for low maintenance, low fuel consumption and High performance to the customer. It is constructed for high cargo intake with a density of 1,54 ton/m3 and for SECA area trade. The hull form is designed for good performance in harsh weather conditions.

With these two newbuildings, Sirius is taking the next step for the environment and as a company. The development of the EVOlution series, with focus on fuel economy, green house emissions and working environment proves this statement in cooperation with our customers.

Jonas Backman, MD

Working environment

When designing a vessel the aim is to make the everyday operation an easy and safe task, that has been the focus when designing the Evolution series. The forecastle is sheltered and the pipe trunk is fully enclosed for low maintenance and eliminating the risk for leakage of any oil. A knuckle boom crane on deck with a vast range will ensure smooth handling on deck.

With the main operational equipment located in sheltered or enclosed areas ensures that the maintenance and operation will be as efficient as possible.




LOA: 119.90 m
LPP: 116.15 m
Breadth, moulded: 19.40 m
Depth to upper deck: 9.80 m
Draught, normal ballast aft (ABT): 5.50 m
Mean draught design: 7.23 m
Air draught, ballast: 26 m
Cargo volume 98%: 9623,6 m³
Slop tanks 98%: 146,6 m³
FO capacity: 391,5 m³
MGO capacity: 74,7 m³
Deadweight, design draught: 7999 mt
GT: 6891
NT: 2791


The propulsion is provided by One low speed 2-stroke Main engine, propeller to be of 4-bladed made of Ni-Al-Bronze and to be of low noise type and delivered as a part of a PROMAS design where the design integrates the propeller, a hubcap, rudder bulb and the rudder itself into a single hydrodynamic efficient unit. In order to save fuel the shaft generator is connected via a frequency converter allowing optimum propeller rpm at various speeds. The Main engine is able to maintain its low specific fuel oil consumption at the different load outtakes, this means that the engine is able to slow steam at a wider range.



Main engine: MAN B&W 6S35ME-B 9,5 HPSCR – 4500 kW at 144 RPM
Main engine NOx reducing: HPSCR, with NOx levels below 2 g/kWh
Aux engines: 3 pcs Mitsubishi S6R MPTA – 640 kW at 1500 RPM
Bow thruster: Brunvoll retracable azimuth – 800 kW
Propeller: Rolls Royce NiAl-bronze CPP, integrated in the PROMAS propeller ruder system
Rudder: Rolls Royce PROMAS with 2 x 70° rudder angle, for high maneuverability
Shaft generator: SAM 600 kW
Boilers: 2 pcs GESAB 1500 kW, thermal oil
Exhaust boiler: GESAB economizer – 600 kW
Aux engine NOx reducing: GESAB Catamiser with NOx levels below 2 g/kWh, combined with exhaust boiler. Read more
Cargo tank heating: Heating coils, rise from 44°C to 66°C in 96 hours
Cargo tank coating: Marine Line 784
Cargo pump system: 11 pcs FRAMO deep well – 330 m³/h
Loading rate: 1200 m³/h to each pair of tanks – or 600 m³/h to one single tank through any crossover.
Discharging rate: 2000 m³/h (6 pumps are able to operate at same time)
Ballast system: 2 pcs 500 m³/h
Ballast water treatment unit: Wärtsilä Aquarius, 500 m³/h sp gr. 1.025

Marine Line 784 coated cargo tank layout at 98%

Cargo center tank No. 1: 524,7 m³
Cargo Wing tank No. 2 P/S: 730,3 m³ / 722,9 m³
Cargo Wing tank No. 3 P/S: 1024,5 m³/ 1023,7 m³
Cargo Wing tank No. 4 P/S: 1033,4 m³ / 1032,6 m³
Cargo Wing tank No. 5 P/S: 1033,1 m³ / 1033,5 m³
Cargo Wing tank No. 6 P/S: 827,6 m³ / 833,5 m³

Total capacity: 9623,6 m³

Slop tanks P/S (98%): 146,6 m³ in total