With a range of new technologies all competing to meet the
challenges to provide eco-friendly maritime solutions to achieve the goals of
the IMO on emissions, shipowners are facing difficult decisions. A joint
research project launched by the classification society DNV and shipbuilder HHI
Group sought to future-proof tanker designs. In a recent "Green Tankers
towards 2050" industry webinar, attended by more than 250 participants
from shipping companies around the world, the results of research was presented
explaining how shipowners and managers can cope with stricter environmental
regulations now and in the future.
“Shipowners are faced with many uncertainties in the rapidly
changing marketplace,” said Seong-Yong Park, COO and SEVP of HHI Group. “We
believe our research results, including proven engineering solutions and
alternative fuels, will support them in developing their future strategy for
ship operations and fleet renewal.”
During the webinar, DNV GL and HHI Group experts explained
the recent development of regulations covering the greenhouse gas emissions
from vessels, including the introduction of the design index for existing
vessels (EEXI) and a new Carbon Intensity Indicator, which are due to enter
into force in 2023. To respond to these regulations, HHI Group introduced their
range of eco-friendly ships that are equipped with alternative fuel
technologies and energy-reducing systems, among them 40 LNG dual-fueled ships
already delivered or under construction.
“The International Maritime Organization (IMO) is
strengthening environmental regulations, including a 50 percent reduction in
ship greenhouse gas emissions by 2050 compared to 2008,” commented H. J. Shin,
Head of Future Ship Research Department at KSOE. “We will help the shipping
industry to reach these ambitious goals by taking a leading position in the
eco-friendly maritime era through research and development.”
By applying DNV GL’s data-based carbon robust model to its
very large crude carrier (VLCC) and Medium Range (MR) tanker ships, HHI Group
found that an LNG fuel propulsion system in combination with advanced energy
saving devices (ESDs) can enable a vessel to meet the new Carbon Intensity
Indicator over its expected lifetime.
“It is important to use alternative fuels like LNG and
technological solutions that are available now, and not wait until 2030 or
beyond”, stressed Y. H. Chung, Head of Initial Design Department at HMD. “Our
joint research has shown that LNG as ship fuel combined with other energy
saving devices can make a vessel both environmentally and economically fit for
the next two decades at least,” said Chung.
“Since ESDs mainly have an impact on fuel consumption during
sailing, the benefits are greater for large vessels such as VLCCs, which spend
more days operating at sea,” explained Christos Chryssakis, Business
Development Manager at DNV GL – Maritime. “These ships are also less sensitive
to price variations when it comes to selection of LNG as fuel. This is because
the capital expenditures are paid back faster due to a higher fuel
consumption.” For smaller vessels with lower fuel consumption, such as MR
Tankers, a higher price differential between very low sulphur oil (VLSFO) and
LNG was required to pay back the initial investment. Therefore, these vessels
were more sensitive to volatile fuel prices, he added.
“We have no clear vision of the zero-carbon ship in deep sea
shipping yet,” said Trond Hodne, Senior Vice President Business Development at
DNV GL - Maritime. “As we work hard towards the zero emission vessel, the
industry also needs to make newbuilding decisions today. Thus, we should not
make perfect the enemy of good. As demonstrated by HHI Group and our experts,
we have energy efficient designs and technologies at hand that will enable
ships to meet the IMO emission trajectories through their entire lifetime.
These highly efficient vessels are likely to be attractive to charterers and
investors today, and even more so if a price is put on CO2.”