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New technology aims to reduce underwater radiated noise generated by ships’ propeller cavitation

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While PressurePores are suitable for all types of vessel, they are particularly suitable for naval vessels, fishing fleets, offshore vessels and cruise ships operating in sensitive environments.
While PressurePores are suitable for all types of vessel, they are particularly suitable for naval vessels, fishing fleets, offshore vessels and cruise ships operating in sensitive environments.

A new technology aimed at reducing the underwater radiated noise (URN) generated by ships’ propeller cavitation has been developed by Strathclyde University and Oscar Propulsion.

The patented Oscar PressurePores system reduces propeller tip vortex cavitation by applying a small number of strategically bored holes in the propeller blades.

The addition of these pressure-relieving holes now allows ships to operate with a more silent propeller with a minimum of compromise on its efficiency or having to slow steam. Reducing cavitation also reduces its associated erosive effect.

Continue reading “New technology aims to reduce underwater radiated noise generated by ships’ propeller cavitation”

AMSA changes to shipping registration have come into force

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AMSA Logo
AMSA Logo

Starting from 1st April 2019, the Australian Maritime Safety Authority (AMSA) has applied changes to shipping registration laws.

Registering a ship: There are no changes to the way that you register a ship on the Australian Registers unless you do not know the vessel’s full ownership history. Namely:
– Ships registered on the Australian general shipping register have Australian nationality.
– Registration of a ship on the Australian general shipping register provides legally and internationally recognisable nationality to your ship. When registered, you will have Australian protection on the high seas and in foreign ports.

Continue reading “AMSA changes to shipping registration have come into force”

IG Clubs continue to implement survey triggers for tankers carrying HFO

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IG Clubs continue to implement survey triggers for tankers carrying HFO
IG Clubs continue to implement survey triggers for tankers carrying HFO

As part of the industry’s efforts to ensure higher ship standards, the International Group of P&I Clubs (IG Clubs) continues to implement survey triggers for seagoing vessels of 10 years of age or more especially tankers carrying HFO, the American P&I Club has reminded the industry in a bulletin.

As a consequence, all sea-going vessels aged 10 years or more which have carried heavy HFO as cargo within the previous 12 months will be subject to condition survey, unless:
– the vessel has undergone a P&I club condition survey during the previous 12 months; or
– the vessel has undergone a Special Survey during the previous 6 months; or
– the vessel has a valid Condition Assessment Program (CAP) rating of 1 or 2 with a classification society having membership in the International Association of Classification Societies (IACS).
– HFO is defined as residual fuel with a kinematic viscosity of 380 centipoises when measured at 50 degrees Celsius by the ISO 3104 test method.

Continue reading “IG Clubs continue to implement survey triggers for tankers carrying HFO”

MAIB safety digest volume 1 2019 published with analyses of 25 accidents

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MAIb Safety diesgt 1/2019The Marine Accident Investigation Branch (MAIB) has published a digest and analyses of twenty five marine recent incidents and accidents with short descriptions about each involving vessels from the merchant, fishing and recreational sectors. The 70 page report can be accessed and downloaded here or at the foot of this page.

In his introduction to the Digest, Andrew Moll says, “I’d like to thank this edition’s introduction writers. I am delighted that Captain Nick Nash, Andrew Locker and Steve Gravells have agreed to write the introductions to the merchant, commercial fishing and recreational craft sections of this digest. All three have written from both their professional and own personal perspectives, and their words are very powerful. If you read nothing else in this issue, I would encourage you to read the section introductions.

Continue reading “MAIB safety digest volume 1 2019 published with analyses of 25 accidents”

Restoration work begins on Loch Lomond paddle steamer

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The Loch lamond Paddle streamer
The Loch lamond Paddle streamer

Work on the iconic paddle steamer berthed in Loch Lomond has taken significant steps forward, in a bid to get the historic Maid of the Loch fully restored to her former glory.

Following a £950,000 cash injection from The Scottish Government, the Loch Lomond Steamship Company (LLSC) has contracted out vital structural work to naval architects, Marine Design International Ltd. This particular stage is necessary for meeting the required safety standards and will place a strong focus on the vessel’s current state by surveying, calculating and designing any adjustments which may have to take place.

Continue reading “Restoration work begins on Loch Lomond paddle steamer”

Norwegian Maritime Authority early findings suggest Viking Sky engine failure caused by low oil pressure

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Viking Sky cruise - Picture of Viking Sky by Erik Johan Landa, Sjøfartsdirektoratet
Picture of Viking Sky by Erik Johan Landa, Sjøfartsdirektoratet

Throughout the night of Saturday 23 March, the Norwegian Maritime Authority (NMA) worked with the ship’s classification society, Lloyd’s, and the company in order to identify the reason why the Viking Sky suffered power “blackout” at Hustadvika in challenging weather conditions. For the present, their conclusion is that the engine failure was directly caused by low oil pressure.

Last night, the Norwegian Maritime Authority (NMA) granted the company a permit to sail on a single voyage to Kristiansund to have necessary repairs made. Throughout the night, the NMA has worked together with the ship’s classification society, Lloyd’s, and the company in order to identify the reason why the Viking Sky suffered power “blackout” at Hustadvika in challenging weather conditions on Saturday 23 March.

Continue reading “Norwegian Maritime Authority early findings suggest Viking Sky engine failure caused by low oil pressure”

The future of fish farming vessels is here now in the form of Astrid Helene

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The Astrid Helene - electric workboat
The Astrid Helene – electric workboat

‘Astrid Helene’ is a fully electric salmon farm workboat designed and built by Grovfjord Mekaniske Verksted, Norway. Owner/ operator Northern Lights Salmon saves the planet from up to 90t CO2 and 900kg of NOx particles annually – the average emission of a diesel powered fish-farm workboat.

There are no longer any diesel fumes on deck either. For crew, the fumes could be quite annoying – particularly if the wind was blowing it in their direction. Now, there is just clean air.

Fully electric work boats such as Astrid Helene will play a key role in the industry’s future: “Electric work boats are perfect for fish farming. Continue reading “The future of fish farming vessels is here now in the form of Astrid Helene”

Poor maintenance lead to sinking of Ms Nancy C says report

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The Nancy C - Photo by Frank Kammerer, towboatgallery.com
The Nancy C – Photo by Frank Kammerer, towboatgallery.com

The NTSB has published its investigation report into the flooding and sinking of the towing vessel ‘Nancy C’ on Lower Mississippi River, near Dyersville, Tennessee, in March 2018. The investigation has identified poor maintenance as the principle cause of the incident.

On 6 March 2018, about 1630 local time, the uninspected towing vessel Ms Nancy C was moving and positioning cargo barges while operating in Everett Lake, a tributary of the Mississippi River, when a deckhand discovered water in a void at the stern of the vessel. While the captain and deckhand attempted to dewater the vessel, it sank in 15 feet of water. Both crew members disembarked to a barge prior to the sinking without injury. Damage was estimated at $667,306.

Continue reading “Poor maintenance lead to sinking of Ms Nancy C says report”

Booklet published to reduce systemic failures incidents

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Reducing the risk of incidents due to systemic failures booklet
Reducing the risk of incidents due to systemic failures booklet

The guide ‘Reducing the risk of incidents due to systemic failures’ is based on the partnership between Bureau Veritas, TMC Marine and the London P&I Club. It offers guidance on decreasing onboard systemic failures and highlights the challenges in shipping with the aim of preventing injury, loss of life and damage to ships and cargo.

Essentially the booklet focuses on enhanced onboard systems so that they are in line with the requirements of the International Safety Management (ISM) Code’s Safety Management Systems to reduce risk and develop a culture of continual improvement.

The publication provides an insight into systemic failures on board ships in response to a global trend of increases in system deficiencies related to the requirements of the ISM code.

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MAIB issues guidance to MGN 564 on marine incident reporting

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Report a marine accident page on the MAIb website
Report a marine accident page on the MAIb website

The MAIB investigates marine casualties involving UK vessels worldwide and vessels of any flag in UK territorial waters with the aim of preventing further avoidable accidents from recurring in the future. The UK MAIB has published amended guidance on marine incident reporting – what who and when an incident should be notified – with modifications made to MGN 564.

Who must report

The master/skipper, or senior surviving officer of a UK ship must notify the MAIB of any marine casualty or marine incident.

The master/skipper of any ship must notify the MAIB of any marine casualty or marine incident if:
– the ship is within UK waters and carrying passengers to / from the UK, or
Continue reading “MAIB issues guidance to MGN 564 on marine incident reporting”

MCA safety bulletin issued for all mariners who use GPS equipment

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Man steering a ship - Credit: Vic Drosso
Credit: Vic Drosso

The Maritime & Coastguard Agency (MCA) has issued a special safety bulletin to all mariners that use GPS to prepare for a rollover event that will occur on 6 April 2019.

On April 6 navigation data from some older GPS systems might become inaccurate due to the ‘week number’ rollover event.

This could cause stand-alone GPS receivers and systems using GPS chips, to produce data that is 19.7 years either in the past or future, therefore generating errors in both the GPS position and time. However, if onboard equipment has been installed after August 1999, or has regular firmware updates from the manufacturer, there should be minimal Continue reading “MCA safety bulletin issued for all mariners who use GPS equipment”

Guidelines on cyber security onboard ships

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Image of a fingers steeling a password
Image of a fingers steeling a password

Ships are increasingly using systems that rely on digitisation, digitalisation, integration and automation, which call for cyber risk management on board. As technology continues to develop, information technology (IT) and operational technology (OT) onboard ships are being networked together – and more frequently connected to the internet. This brings the greater risk of unauthorised access or malicious attacks to ships’ systems and networks. Risks may also occur from personnel accessing systems on board, for example by introducing malware via removable media.

To mitigate the potential safety, environmental and commercial consequences of a cyber incident, a group of international shipping Continue reading “Guidelines on cyber security onboard ships”

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