Crews on Monday, January 6 2020, placed the 150-ton section of the capsized vessel M/V Golden Ray inside Reef SFC approximately 20 miles east-southeast of St. Simons Island, after all materials were inspected for cleanliness, to be used as an artificial reef for maritime species.
The St. Simons Sound Incident Response Unified Command has successfully completed the removal of the rudder and propeller from the Golden Ray this week. The vessel capsized off Georgia in September.
Kongsberg Maritime has successfully adapted a propeller concept used in naval applications, aiming to provide operational and environmental benefits to commercial shipping customers. By deploying such a technology can significantly reduce cavitation-induced noise and erosion risk.
IMCA published a safety flash according to which a vessel had both of its main propellers caught in fishing nets. The incident took place a nautical mile off shore, after a three-day waiting on weather. If hazards are observed and considered by the Officer of the Watch (OoW) to pose a significant risk to the vessel, consider suspending operations.
On Sunday, 16 September, Hamburger Hafen und Logistik AG loaded the biggest ship propeller in the world onto a vessel. The “HHLA IV” floating crane brought the gigantic 110-tonne object to the port of Waltershof, where it was hoisted onto the “Hyundai Supreme” container ship.
A miscommunication between a crane operator a platform supply vessel’s crewmembers, led a mooring rope to the side of the vessel. After that the port side engine shut down and there was partial loss of vessel propulsion. The deck crew did not notify the bridge in time when the rope was lowered into the water, and thus the propeller was fouled by the rope.
TrueProp Software, a company that builds software for marine propeller inspection, announced the launch of the new Improved Propeller Inspection and Metrology Joint Industry Project. This project aims to address methods and software code for improvements in propeller inspection.
The video, produced by Science Channel, shows a 23-foot propeller which gets cast in one piece, an alloy of eight metals – mostly copper- at 1,800 degrees Fahrenheit. It takes five days for it to cool into one big lump and then workers have to extract the propeller from its mold without damaging it.
An increasing trend in reported incidents involving aft propeller shaft bearing damages has been observed. DNV GL cites what is suspected to be one of the contributory factors to some of these types of damages, namely operation involving incomplete propeller immersion.
A joint research project carried out by Wärtsilä and City University London has succeeded in identifying the specific design parameters that create the risk of ‘singing’ propellers. Though rare, ‘singing’ is nevertheless an annoying problem that occurs as a strong tonal noise originating from the propeller, thus causing a negative effect to onboard comfort levels.
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- Women in shipping
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