Cold ironing,
Article: Cold-Iron the Ships by Capt. Pawanexh Kohli or shore connection, shore-to-ship power (SSP) or alternative maritime power (AMP), is the process of providing shoreside electric power, electrical power to a

ship A ship is a large watercraft that travels the world's oceans and other sufficiently deep waterways, carrying cargo or passengers, or in support of specialized missions, such as defense, research, and fishing. Ships are generally distinguished ...

at berth while its main and auxiliary

engine An engine or motor is a machine designed to convert one or more forms of energy into mechanical energy. Available energy sources include potential energy (e.g. energy of the Earth's gravitational field as exploited in hydroelectric power ...

s are turned off. Cold ironing permits emergency equipment,

refrigeration The term refrigeration refers to the process of removing heat from an enclosed space or substance for the purpose of lowering the temperature.International Dictionary of Refrigeration, http://dictionary.iifiir.org/search.phpASHRAE Terminology, ht ...

, cooling, heating,

lighting Lighting or illumination is the deliberate use of light to achieve practical or aesthetic effects. Lighting includes the use of both artificial light sources like lamps and light fixtures, as well as natural illumination by capturing daylig ...

and other equipment to receive continuous electrical power while the ship loads or unloads its

cargo Cargo consists of bulk goods conveyed by water, air, or land. In economics, freight is cargo that is transported at a freight rate for commercial gain. ''Cargo'' was originally a shipload but now covers all types of freight, including trans ...

Shorepower Shore power or shore supply is the provision of shoreside electrical power to a ship at berth while its main and auxiliary engines are shut down.shipping, shipping industry term that first came into use when all ships had

coal Coal is a combustible black or brownish-black sedimentary rock, formed as rock strata called coal seams. Coal is mostly carbon with variable amounts of other elements, chiefly hydrogen, sulfur, oxygen, and nitrogen. Coal is formed when ...

-fired engines. When a ship tied up at port there was no need to continue to feed the fire and the iron engines would literally cool down, eventually going completely cold, hence the term ''cold ironing''. Shutting down main engines while in

port A port is a maritime facility comprising one or more wharves or loading areas, where ships load and discharge cargo and passengers. Although usually situated on a sea coast or estuary, ports can also be found far inland, such as H ...

continues as a majority practice. However, auxiliary diesel generators that power cargo handling equipment and other ship's services while in port are the primary source of air emissions from ships in ports today, because the auxiliaries run on heavy fuel oil or bunkers. Cold ironing mitigates harmful emissions from

diesel engine The diesel engine, named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel is caused by the elevated temperature of the air in the cylinder due to mechanical compression; thus, the diesel engine is a so-ca ...

s by connecting a ship's load to a more environmentally friendly, shore-based source of electrical power. An alternative is to run auxiliary diesels either on gas (LNG or LPG) or extra low sulphur distillate fuels, however if noise pollution is a problem, then cold ironing becomes the only option. A ship can cold iron by simply connecting to another ship's power supply. Naval ships have standardized processes and equipment for this procedure. However, this does not change the power source type nor does it eliminate the source of air pollution. The source for land-based power may be grid power from an electric utility company, but also possibly an external remote generator. These generators may be powered by diesel or renewable energy sources such as wind, water or solar. Shore power saves consumption of fuel that would otherwise be used to power vessels while in port, and eliminates the air pollution associated with consumption of that fuel. Use of shore power facilitates maintenance of the ship's engines and generators, and reduces noise.

Background

Unlike navies, whose ships can berth for extended periods at their bases, merchant ships have shorter port stays, during which they sustain electrical loads through on-board fossil fuel powered electrical generators (auxiliary engines). Oceangoing ships have generally not been subject to emissions controls, so merchant vessels throughout the world have been using bunker fuel or HFO – which is residual petroleum – as the optimal choice of fuel. This fuel has high particulate matter. Studies show that a single ship can produce particulate emissions equal to the same amount as 50 million cars annually. Article: Cold-Iron the Ships by Capt. Pawanexh Kohli; 090909 slideshare.net Further research indicates cardio-pulmonary conditions caused by particulate matter from ship emissions are responsible for 60,000 deaths annually. These deaths have been detected far inland due to prevailing wind conditions. The total world trading fleet stands at 50,000+ merchant ships (Lloyds data as of January 2008), and each ship spends some 100 days in port in a year. ''For every of electricity, about 200 g of

bunker fuel Fuel oil is any of various fractions obtained from the distillation of petroleum (crude oil). Such oils include distillates (the lighter fractions) and residues (the heavier fractions). Fuel oils include heavy fuel oil, marine fuel oil (MFO), ...

is consumed. Each 1 kg of bunker oil generates 3.1 kg of carbon dioxide. It is assessed that globally ships use 411,223,484 tonnes of fuel annually.'' thumb Keeping these reports in mind, new regulatory norms have been mandated by the International Maritime Organization (IMO). The level of sulphur is one of the benchmarks in measuring quality of fuel and Marpol Annex VI requires use of <4.5% sulphur fuel, effective 2010. The target is to reduce world maritime sulphur output to <0.5% by 2020. Some regions (e.g., California) already require ships switch to cleaner fuel when in their local waters. Cold ironing does away with the need to burn fossil fuel on board the ships while they are docked. Under this concept as it is legally implemented, ships visiting ports are hooked on to local grid power or other power sources, which are already regulated by local pollution norms. This externally sourced power serves the ship's internal cargo handling machinery and hotelling requirements. Effectively, all the power generating sources are shut down and the ship is hence cold-ironed. This brings immediate relief from pollution by shipboard emissions and allows a more holistic maintenance schedule to be followed by ship operators, which are typically hard pressed to maintain planned maintenance schedules due to commercial operating pressures. The immediate result is lowered heat outputs from ships, lowered air emissions, lowered risk of accidents from fuel based machinery, lowered disturbance to the

ecosystem An ecosystem (or ecological system) consists of all the organisms and the physical environment with which they interact. These biotic and abiotic components are linked together through nutrient cycles and energy flows. Energy enters the syste ...

, and various others.

Concerns and problems

* Incompatibility of electricity parameters: ships, having been built in diverse international yards, have no uniform voltage and frequency requirement. Some ships use 220 volts at 50 Hz, some at 60 Hz, some others use 110 volts. Primary distribution voltage can vary from 440 volts to 11 kilovolts. * Wide variations in load requirements, from a few hundred kW in case of car carriers to a dozen or more MW in case of passenger ships or

reefer ship A reefer ship is a refrigerated cargo ship typically used to transport perishable cargo, which require temperature-controlled handling, such as fruits, meat, vegetables, dairy products, and similar items. Description ''Types of reefers:'' Re ...

s. * Connectors and cables are not internationally standardised, though work has progressed in this direction. * There are other legal implications to outsourcing primary power source. The legal implications stem from possible impact levels in international trade, commercial responsibilities of stakeholders and other risk as assessed. * Some ports have glass fiber data communication systems installed. The standard for data communication via glass fiber should be as set in the IEC/IEEE 80005 par 2 standard, published in 2016. All these problems are addressable and work has already begun in reducing ship emissions by cold ironing. Various studiesThesis on Energy Efficiency & Environment Sustainability (Maritime)
/ref> are being conducted to fully implement a viable, controllable and monitored method of powering the most important arm of modern-day logistics, the merchant ships. The U.S. State of California is requiring a percentage of ships calling there to use shore power by 2014. The

Port of Oakland The Port of Oakland is a major container ship facility located in Oakland, California, in the San Francisco Bay. It was the first major port on the Pacific Coast of the United States to build terminals for container ships. As of 2011 it was the f ...

is implementing a High Voltage Shore Connection (HVSC) at 6,600 volts. The first

Hapag-Lloyd Hapag-Lloyd AG is a German international shipping and container transportation company. Hapag-Lloyd was formed in 1970 through a merger of Hamburg-American Line (HAPAG) and North German Lloyd. History The company was formed on September 1, 1 ...

vessel to use the system, ''Dallas Express,'' docked there in December 2012. The electrical and mechanical equipment to interface the ship's electrical load with the shore power is in a 40-foot container at the vessel's stern. Initially 15 Hapag-Lloyd ships will receive the system. The

Massachusetts Port Authority Massachusetts Port Authority (Massport) is an American port authority in the Commonwealth of Massachusetts. It owns and operates three airports—Logan International Airport, Hanscom Field, and Worcester Regional Airport—and public terminals i ...

carried out a study of cold ironing and alternatives in 2016 that pointed out a number of problems, including the high peak power demand (13 MW for a cruise ship, 3 MW for a container ship) and the high cost of providing the necessary equipment and upgraded electrical power infrastructure for Boston Harbor. It also expressed concern about loss of competitiveness without a U.S. East Coast regional agreement to install such systems. The ports of Halifax and Brooklyn have installed cold ironing at one cruise-ship berth each at a cost of $10 and $20 million, respectively, mostly paid by government grants.

Background

Concerns and problems

See also