SAFETY4SEA Editor

SAFETY4SEA Editor

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Ocean Infinity acquires world’s largest robotic vessels to its fleet

Following the developments in automation, Ocean Infinity announced that it signed a contract for eight 78-metre, optionally crewed robotic vessels to be added at its Armada fleet. It is stated that the new vessels will be controlled by people onshore and will initially only utilise a skeleton crew onboard. In addition, they will be capable of working with no personnel offshore whilst also consuming solely renewable fuel such as ammonia.

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Vessel’s Lay Up

Ship operators may find that they are unable to employ their vessels profitably and take the decision to remove it from service.In case the owner has a reasonable expectation that demand will recover, he may find a suitable anchorage and keep the vessel ready for employment. The status of the vessel then decleared as “A Laid Up Vessel”.

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Pirates free “Elka Aristotle” crew, 1 dies

Following the abduction of four crewmembers from "Elka Aristotle" tanker off Lome, Togo, the managing company of the Greek-flagged tanker announces that three of the crewmembers taken are free. However, the company reports that one of the four kidnapped crew, of Filipino nationality, has died, in what it is understood to not be a from actions by those holding the crew hostage but due to illness.

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Energy efficiency with variable frequency drives

  Konstantinos Kanellakis, Marine Business Development, Group Product Manager Motion & Drives, Schneider Electric presentation during the 2015 GREEN4SEA Forum. The presentation is about the energy efficiency potential of using variable speed drives to run fans and pumps. Usually valves and dampers are used to regulate the flow of air or liquids, which demands more energy than controlling the flow with drives. Two of the most promising solutions are mentioned and a case study of an actual installation and the energy efficiency achieved. All the issues that may arise by the use of drives on ships, like harmonics, electromagnetic interference (EMC) and voltage peaks are analysed.   There are many ways to reduce a ship’s energy consumption, one of which is with the use of variable speed drives. Variable speed drives have a low investment cost and are easy to install, even when the ship is travelling. Another important factor is that it is also one of the solutions with the fastest return-on investment. A variable speed drive is a device which gets power from the network (440V-60Hz) and transforms it so that it will run a motor at the speed we want with the torque our application needs. There are many...

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