Glossary

Deutsch: Diesel / Español: Diésel / Português: Diesel / Français: Diesel / Italiano: Diesel

Diesel in the maritime context refers to a type of fuel and the engines that burn this fuel, both widely used in various types of watercraft for propulsion and power generation.

Description

In the maritime sector, diesel engines are favored for their reliability, efficiency, and the higher energy density of diesel fuel compared to gasoline. This makes diesel an ideal choice for powering large vessels over long distances. Maritime diesel engines operate on the same basic principles as their land-based counterparts but are specially adapted to handle the demanding conditions at sea. These adaptations might include enhanced corrosion resistance and systems designed to function optimally at various angles due to the movement of the sea.

There are two main types of diesel engines used in maritime contexts:

1. Two-stroke diesel engines: These are often used in large vessels such as container ships and tankers. They are powerful and efficient for high-load applications but are also heavier and more complex.
2. Four-stroke diesel engines: More common in smaller vessels, including fishing boats and yachts. They are generally easier to maintain and can be used for both propulsion and power generation.

Diesel fuel used in maritime applications must meet specific standards set by maritime regulations, such as the International Maritime Organization (IMO). These standards include specifications for sulfur content, which has been significantly reduced in recent years to lessen the environmental impact. Low sulfur diesel fuels, such as Marine Diesel Oil (MDO) and Marine Gas Oil (MGO), are now commonly used to comply with emissions regulations, particularly in Emission Control Areas (ECAs).

Application Areas

Diesel engines and fuel are utilized across various sectors within the maritime industry:

• Commercial shipping: Large cargo ships use diesel engines for long-distance hauling due to their efficiency and the high energy content of diesel fuel.
• Fishing: Smaller fishing vessels predominantly use diesel engines for their reliability and the extended range they provide.
• Recreational boating: Yachts and smaller boats often have diesel engines, especially those designed for longer voyages.
• Naval applications: Many navies around the world rely on diesel engines for a variety of ships, including submarines, due to the durability and power of these engines.

Well-Known Examples

An example of diesel’s critical role in the maritime industry can be seen in the use of diesel-electric submarines, where diesel engines are used to charge batteries that power the submarine when submerged. This technology has been pivotal for naval operations across various countries.

Treatment and Risks

While diesel engines are efficient and reliable, they pose environmental and health risks due to the pollutants they emit, such as nitrogen oxides (NOx) and sulfur oxides (SOx). To mitigate these impacts, the maritime industry is subject to stringent regulations that limit emissions from diesel engines. These include the IMO's global sulfur cap, which limits the sulfur content in marine fuels. Additionally, ongoing research and development are focused on improving diesel engine technology to increase efficiency and reduce harmful emissions.

Similar Terms

• Marine Diesel Oil (MDO)
• Marine Gas Oil (MGO)
• Internal combustion engine

Weblinks

• industrie-lexikon.de: 'Diesel' in the industrie-lexikon.de (German)
• environment-database.eu: 'Diesel' in the glossary of the environment-database.eu
• top500.de: 'Diesel' in the glossary of the top500.de
• umweltdatenbank.de: 'Diesel' im Lexikon der umweltdatenbank.de (German)

Summary

In the maritime context, diesel refers to both the fuel and the engines that power a wide range of vessels, from small fishing boats to large international cargo ships. Diesel engines are prized for their efficiency and power, making them a cornerstone of marine engineering. However, they also pose environmental challenges, which have led to significant regulatory changes to reduce their impact.

--