This segment deals with marine vessels including boats, ships, oil rigs etc. The domain includes specialized sea or ocean explorer machines, some of these could be with float or deep dive capabilities thus extending to oceanographic engineering segment. Overall, the implementation of engineering services to crafts and propulsion mechanisms dealing with water bodies are inclusive.

The implementation of available and relevant technologies impacts right from the design scheme, working operations and final dismantling of devices and vessels. Marine engineering services could be implemented while the vessel is in operation or on shore. The expanse of the field is as wide as the oceans themselves and encompasses all qualified engineering practices which work in tandem to ensure efficiency, safety and environment conservation through the life span. Here are the areas of the specialized domains usually concerned with:

• Marine architects are usually focussed on design cues and elements that enhance speed through the water.
• Mechanical professional work on the main propulsion power plant the power terrain, vessel steering, anchors, cargo movement, air-con as well as cooling. Post life experts are re-quired for effective dismantling of the vessel.
• Electrical systems related to power generation, distribution, circuits and communications etc.

• Chemical and metallurgy related professionals deal with longevity of vessel life. Considering the risks involved with ocean security against salinity and partially submerged vessels, the important aspects relate corrosion and environmental damage.