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H-class container ship
View on WikipediaMaersk Hidalgo in the port of Trieste | |
| Class overview | |
|---|---|
| Builders | Hyundai Heavy Industries, Ulsan, South Korea |
| Operators | Maersk Line |
| Preceded by | Triple E-class container ship |
| In service | 2017–present |
| Planned | 11 |
| Completed | 11 |
| Active | 11 |
| General characteristics | |
| Type | Container ship |
| Tonnage | 153,774 GT |
| Length | 353 m (1,158 ft 2 in) |
| Beam | 53.5 m (175 ft 6 in) |
| Draft | 15 m (49 ft 3 in)= |
| Depth | 29.9 m (98 ft 1 in) |
| Capacity | 15,226 TEU |
The H class is a class of container ships operated by the Danish shipping company Maersk Line. The ships were built by Hyundai Heavy Industries at their shipyard located in Ulsan, South Korea.
The ships are each 353 metres (1,158 ft 2 in) long and 53.5 metres (175 ft 6 in) wide. The ship has 21 container bays and can carry a maximum of 21 TEU containers wide on deck. They are not designed with a specific speed and draft in mind and thus can be deployed on both east-west and north-south maritime routes.[1]
The first nine ships were ordered by Maersk in 2015. In 2018 Maersk announced it had ordered two additional ships from the same shipbuilder.[2]
Service history
[edit]2018 Maersk Honam fire
[edit]On 6 March 2018, a large fire broke out in one of the cargo holds of the Maersk Honam. It took more than three days to get the fire under control and the ship continued to burn for several more days. Four crew members died and one more was reported missing.[3][4] The ship was salvaged and the damaged parts of the vessel were rebuilt. The ship was renamed Maersk Halifax before entering into service again.[4]
Attack on Maersk Hangzhou
[edit]On 30 December 2023 Maersk Hangzhou was attacked in the Gulf of Aden by Houthi forces, attempting to board the vessel. Personnel aboard the ship repelled the attack and with the aid of the United States Navy, drove off the attackers.[5]
List of ships
[edit]| Ship name | Yard number | IMO number | Delivered | Status | Ref. |
|---|---|---|---|---|---|
| Maersk Hong Kong | 2871 | 9784257 | 6 July 2017 | In service | |
| Maersk Horsburgh | 2872 | 9784269 | 11 August 2017 | In service | [6] |
| Maersk Honam now Maersk Halifax |
2873 | 9784271 | 31 August 2017 | In service | [7] |
| Maersk Hidalgo | 2874 | 9784283 | 16 October 2017 | In service | [8] |
| Maersk Hanoi | 2875 | 9784295 | 6 January 2018 | In service | [9] |
| Maersk Hangzhou | 2876 | 9784300 | 5 February 2018 | In service | [10] |
| Maersk Hamburg | 2877 | 9784312 | 1 May 2018 | In service | [11] |
| Maersk Herrera | 2878 | 9784324 | 31 July 2018 | In service | [12] |
| Maersk Havana | 2879 | 9784336 | 4 January 2019 | In service | [13] |
| Maersk Huacho | 3040 | 9848948 | 15 April 2019 | In service | [14] |
| Maersk Houston | 3041 | 9848950 | 15 May 2019 | In service | [15] |
References
[edit]- ^ "Maersk signs $1.1 billion contract for nine 14,000-TEU ships | JOC.com". www.joc.com. Retrieved 2020-07-26.
- ^ "Maersk Line Books 15,000 TEU Boxship Duo at HHI". Offshore Energy. 2018-02-19. Retrieved 2020-07-26.
- ^ Gronholt-Pedersen, Jacob (7 March 2018). "One dead after Maersk Line vessel catches fire in Arabian Sea". Reuters. Retrieved 3 February 2024.
- ^ a b "Report: Dangerous Goods May Have Caused Maersk Honam Fire". The Maritime Executive. 21 October 2020. Retrieved 3 February 2024.
- ^ Gronholt-Pedersen, Jacob; Elimam, Ahmed (31 December 2023). "US sinks 3 ships, kills 10 after Houthi Red Sea attack". Reuters. Retrieved 3 February 2024.
- ^ "Maersk Horsburgh (400992)". ABS Record. American Bureau of Shipping. Retrieved 2020-07-27.
- ^ "Maersk Halifax (400993)". ABS Record. American Bureau of Shipping. Retrieved 2020-07-27.
- ^ "Maersk Hidalgo (401141)". ABS Record. American Bureau of Shipping. Retrieved 2020-07-27.
- ^ "Maersk Hanoi (401142)". ABS Record. American Bureau of Shipping. Retrieved 2020-07-27.
- ^ "Maersk Hangzhou (401143)". ABS Record. American Bureau of Shipping. Retrieved 2020-07-27.
- ^ "Maersk Hamburg (401280)". ABS Record. American Bureau of Shipping. Retrieved 2020-07-27.
- ^ "Maersk Herrera (401281)". ABS Record. American Bureau of Shipping. Retrieved 2020-07-27.
- ^ "Maersk Havana (401282)". ABS Record. American Bureau of Shipping. Retrieved 2020-07-27.
- ^ "Maersk Huacho (401564)". ABS Record. American Bureau of Shipping. Retrieved 2020-07-27.
- ^ "Maersk Houston (401565)". ABS Record. American Bureau of Shipping. Retrieved 2020-07-27.
H-class container ship
View on GrokipediaDesign and construction
Development and ordering
In July 2015, A.P. Moller-Maersk placed an order for nine H-class container vessels with Hyundai Heavy Industries as part of a $15 billion fleet investment program initiated in 2014 to capitalize on recovering global containerized trade volumes following the 2008 financial crisis.[5] The procurement aimed to replace older, less efficient tonnage with larger vessels offering economies of scale to lower costs per twenty-foot equivalent unit (TEU), while increasing the proportion of owned ships in the fleet for greater control and competitiveness.[5] The contract, valued at $1.1 billion, specified vessels with a nominal capacity of 14,000 TEU each, designed for enhanced operational flexibility across diverse routes including East-West and North-South trades, rather than pursuing absolute size maxima like the preceding Triple-E class (up to 18,000 TEU).[5] Deliveries commenced in 2017, with the ships registered under the Singapore flag and built to International Maritime Organization standards for safety, structural integrity, and emissions control.[5] Maersk Line Chief Operating Officer Søren Toft emphasized the strategic intent, stating the vessels "will be designed to operate efficiently across many trades" and "help us stay competitive and make our fleet more flexible and efficient."[5] In 2018, Maersk supplemented the class with an order for two additional vessels from the same yard, expanding the series to eleven units optimized for route-specific efficiency over record-breaking scale.[6]Technical specifications
The H-class container ships have a length overall of 353 meters, a beam of 53.5 meters, a draft of 15 meters, and a depth of 29.9 meters.[6][7] These dimensions enable accommodation of up to 21 container bays, with a maximum stowage width of 21 TEU containers on deck.[6] Nominal capacity is 15,226 TEU, supporting a mix of 20-foot and 40-foot ISO-standard containers.[7][8] The design incorporates approximately 1,300 reefer container power plugs to facilitate refrigerated cargo transport. Structural features include a twin-island bridge configuration, separating navigation and engine control for enhanced redundancy and safety during operations.[9] Ballast water systems are optimized for maintaining trim and stability across varying load conditions, from lightship to fully laden states.[9] Cargo handling compatibility extends to automated ship-to-shore cranes at modern terminals, with container securing systems adhering to ISO 1496-1 standards for lashing and stacking integrity.[7]| Specification | Value |
|---|---|
| Length overall | 353 m[6] |
| Beam | 53.5 m[6] |
| Draft (design) | 15 m[6] |
| Nominal TEU capacity | 15,226 TEU[7] |
| Reefer plugs | ~1,300 |
Propulsion and efficiency features
The H-class container ships are equipped with a single MAN B&W 8G95ME-C9.5 two-stroke, low-speed diesel engine producing 54,960 kW of power, which drives a fixed-pitch propeller through a single shaft to achieve a service speed of 24 knots.[10][11] This electronically controlled engine features variable exhaust valve timing and common-rail fuel injection, optimizing combustion efficiency across load ranges.[12] Efficiency is enhanced by a specific fuel oil consumption (SFOC) of approximately 155-160 g/kWh at optimal loads, derived from the engine's high thermal efficiency and ultra-long stroke design, which minimizes mechanical losses per thermodynamic cycle. Waste heat recovery systems capture exhaust gas and jacket water heat to generate auxiliary power via steam turbines or organic Rankine cycles, reducing overall fuel demand by 3-5% through improved energy utilization from the main engine's exhaust temperatures exceeding 300°C.[13] Empirical data from similar MAN ME-C series engines in large container vessels confirm these gains, with hydrodynamic principles dictating that recovered heat offsets auxiliary generator loads during typical voyage profiles at 80-90% engine load. Hull form optimizations contribute to reduced hydrodynamic resistance, with the vessels' length-to-beam ratio of approximately 6.6 (353 m length, 53.5 m beam) lowering wave-making and frictional drag compared to broader designs, as slender forms align with first-principles reductions in wetted surface area and form factors per Froude scaling.[14] Selective catalytic reduction (SCR) systems using urea injection achieve NOx reductions exceeding 90% in exhaust gases, ensuring compliance with IMO Tier III standards in emission control areas via catalytic conversion of NOx to N2 and H2O at temperatures above 350°C, independent of sulfur regulations.[15] These features collectively yield 10-15% lower CO2 emissions per TEU-mile versus smaller vessels of 8,000-10,000 TEU capacity, based on scale economies and voyage-specific fuel burn data from ultra-large container ship operations.[16]Fleet overview
List of H-class vessels
| Ship Name | IMO Number | Delivery Date | TEU Capacity | Status |
|---|---|---|---|---|
| Maersk Hong Kong | 9784257 | 6 July 2017 | 15,226 | Active[7] |
| Maersk Horsburgh | 9784269 | 2017 | 15,226 | Active[17][11] |
| Maersk Halifax (ex-Maersk Honam) | 9784271 | 31 August 2017 | 15,226 | Active[18][19] |
| Maersk Hidalgo | 9784283 | 2017 | 15,282 | Active[20] |
| Maersk Houston | 9848950 | 2019 | 15,282 | Active[21] |