Containerships with a total cargo carrying capacity of 5.3 million TEU are now fitted with an exhaust gas cleaning system (scrubber) to remove sulphur oxides (SOx) from the exhaust gasses generated by the combustion processes in marine engines and thereby comply with the IMO 2020 global sulphur regulation which came into force on January 1, 2020.
By the start of July, the share of the containership fleet with scrubbers installed exceeded that of the crude oil tanker fleet. "In order to cut the sulphur oxides emission, shipowners who can afford to buy a scrubber have done so to a substantial extent, with investments predominantly directed towards high consumption ship types," says Peter Sand, BIMCO's chief shipping analyst.
"Choosing the scrubber option to comply with the sulphur regulation was heavily debated as January 1, 2020 approached. But even with the low bunker fuel price spread between high and very-low sulphur fuels in the current market, it is safe to say that the investments are economically sound.
"However, the payback period on the investment is obviously extended at a price spread of US$67 per MT, compared to an expectedly normalised price spread in the range of $100-$200 per MT," Mr Sand said.
While the scrubber-fitted fleet of main cargo carrying ship types now counts 2,600 ships, most of the fleet - 20,000 ships - are without a scrubber, reports New York's Marine Link.
The bigger the ship, the more fuel it consumes. This explains why the uptake of scrubbers is more popular for VLCCs, Capesizes and Ultra large containerships, than for their much smaller peers such as Aframax, Handymax/Handysize and feeders.
For VLCCs and Capesize sectors, scrubber-fitted ships as a share of the fleet (measured in DWT), currently amount to 30 per cent. By year-end, the share is likely to have grown to 35 per cent. For Post-Panamax (15,000+ TEU) the share has already exceeded 40 per cent and is likely to reach 50 per cent by the end of 2020. 56.3 per cent of the current container shipping order book (1.2 million TEU) will have a scrubber onboard when they are delivered, but more importantly, the pending retrofits of 1.5 million TEU pushes up the total scrubber count.
Adding ongoing and pending scrubber retrofits to those that will be on board newbuilds brings the total scrubber capacity count to 8 million TEU for containerships (31.6 per cent), 141 million DWT for crude oil tankers (30.9 per cent) and 226 million DWT of dry bulker capacity (23.5 per cent) once all is installed.
The bunker price spread is currently just $67 per MT if the fuel is purchased in Singapore, the world's largest bunkering port. Local market conditions mean that the comparable spread in other significant bunkering hubs, like Rotterdam and Fujairah, is $46 and $74 per MT respectively as per August 11, 2020.
Choosing to comply to the new sulphur regulation without a scrubber installed requires a ship to run on a low-sulphur fuel oil. Since January 1, 2020, the global refinery industry has supplied the shipping sector with mainly low-sulphur fuel oil, with the more expensive distillate, marine gas oil, a distant second.
"The debate on scrubber economics is all but gone now, as 2020 is in full swing and focus has turned towards Covid-19, and how that impacts the business. What remains are the economic realities and technical obstacles the industry is dealing with daily," Mr Sand said. "Cost savings are essential to all, but despite a considerable share of the fleets now being scrubber-fitted, the largest part of the fleet continues to operate without."
Source: Shipping Gazette