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Vestdavit PAP-16000 brings new davit lifting force to market

Vestdavit has completed its largest ever single-point A-frame davit for over the side boat handling, rising to the continuing challenge set by customers to be able to launch and retrieve ever larger workboats from their ships.

The first PAP-16000 davit, which features a safe working load of 16t, will be installed on board a service operation vessel destined for a specialized segment in the offshore industry for an unspecified owner. The 58.5 m length vessel, due delivery by the end of 2017, will operate off north continental Europe.

The Norwegian boat-handling specialist said it had received approval from DNV-GL for the new PAP-16000, which can handle workboats in conditions of up to sea state 5. It features an anti-pendulation docking head and guiding arms to limit load sway in adverse weather.

“Vestdavit has supplied bigger davits, but the PAP-16000 is our largest single point davit with docking system for lifting over the side of a ship to date,” said Atle Kalve, Vestdavit Development Director. “We have delivered dual-point/winch davits of up to 36t SWL and a 30t single point davit for stern operations, making us the market leader in handling very large workboats. However, single point handling of larger and larger workboats over the side without compromising stability presents particular challenges.”

The first installation will be onboard a vessel designed for flexibility, needing to lift one crew boat able to carry up to five personnel, but another able to carry a complement of up to 10 persons plus one ton of cargo, Mr. Kalve added.

In its first delivery, the new davit will also be distinguished by its high operating speeds, with the customer requesting lifting speeds of 45 m/min, which Mr. Kalve said demanded a comparatively high oil flow to achieve max hoisting speed at SWL.

In addition to service operation vessels, the PAP-16000 offers a new and innovative option for owners of emergency response and rescue vessels, pilot ships, standby vessels, multi-purpose offshore vessels and other types of construction vessel.

Fire in Vestdavit offices – Possible disruption of service

Vestdavit and all staff would like to express sincere thanks for the inquiries and good wishes sent to us by our industry partners, following the fire which occurred in the stairwell of our Bergen headquarters building on April 19th.

The safety of our staff is paramount, and we are happy to report that no one was injured in the incident, which is not connected to Vestdavit and appears to have started outside the building’s main entrance.

Nevertheless, public spaces in the building have suffered smoke damage as a result of the fire, and the affected areas include part of our own offices. We have re-entered the premises and the clean-up operation is now fully under way.

The situation is firmly under control and Vestdavit will continue to operate as normally as possible. However, customers are kindly asked for their understanding over the coming days, in case our response times fall in any way short of the high standards we set ourselves as a company.

Vestdavit mission accomplished on Ramform safety

Seatrials are underway in Japan involving Ramform Hyperion, the last of four ships built to the seismic sector’s all-time highest specifications, completing a project that shows the way distinctive design also demands innovation from the equipment keeping ships safely in service.

Reckoned to be the widest monohulls at the waterline ever built, the Petroleum Geo-Services (PGS) vessels need a unique Vestdavit dual point boat handling solution to lift and lower tender boats in wave heights up to sea state 6. The boats work as Fast Rescue Craft with six crew, as tenders with 20 persons on board and as lifeboats with capacity for 40.

Ramform Hyperion, under delivery by Mitsubishi Heavy Industries, features a distinctive ‘5th generation’ hull form that is 104m in length and an extraordinary 70m across the beam, designed to deploy ultra-wide streamer tows aft. As a result, it has only a short, flat parallel ship side for tender boat launching and retrieval, necessitating a 12m outreach painter boom – the largest ever from Vestdavit or any other supplier.

“A standard davit solution was not compatible with the design of the ship itself; to work, it would be necessary for the vessel itself to be longer,” says Atle Kalve, Development Director, Vestdavit. “Involvement at an early stage of vessel design led us to a one-of-a-kind solution for workboat/lifeboat/FRC davit operations. From the outset, we also knew that davits used daily by ships expected to work two years at sea without interruption meant that no equipment downtime would be acceptable.”

Like its predecessors, Ramform Hyperion is fitted with two Vestdavit HN – 10000S dual point hydraulic davits, one on each side, with a dual winch system specifically developed for the application. Both the boom and the davits are computer-controlled and feature in-built auto tension and shock absorption optimising safety and crew comfort on launch and recovery in high seas. A 200 tonne Vestdavit shock absorber system takes peak loads out of the paravane doors during seismic operations to prevent the holding ropes from snapping.

“From the pure equipment point of view, we have delivered a motion compensating, multi-davit solution featuring dual winches, shock absorbers and synchronous lifting and lowering,” says Kalve. “From the user’s point of view, what sets the Vestdavit HN – 10000S solution apart is its self-levelling capability, without which it would not be possible to handle this extraordinary ship type’s boats in such high sea states.

“Our primary concern is always safety, but davits are also integral to everyday efficiency on these ships. We are handling expensive equipment and we need to eliminate shocks to make the process of deployment and recovery as smooth and efficient as possible.”

About Vestdavit:

Vestdavit designs, supplies and supports tailor-made solutions for launching and recovering boats in difficult conditions at sea. Its range of boat handling systems and davits are the first choice of navies, coastguards, seismic survey operators, pilot authorities and offshore operators who need to be able to operate small boats safely from larger vessels. Since 1975 Bergen-based Vestdavit has supplied over 1,900 davits and side and stern launch systems. They have proven themselves for almost 40 years of use in the North Sea and other harsh environments around the world. Self-tensioning and shock absorbing systems ensure crew safety and widen the operational window for the users. Vestdavit’s key focus is on operational effectiveness, safety and the reliability of its equipment.

View Davit systems from Vestdavit here!

For more information:

Atle Kalve

Development Director

+ 47 90 89 39 39

NAVDEX, ABU DHABI 19-23 February 2017

We are attending the NAVDEX exhibition in Abu Dhabi. Come by Stand, A-030 to meet our team. Vestdavit will be showcasing its marine solutions.

Looking forward to meeting you at NAVDEX, Abu Dhabi, between the dates 19-23 February.

Lightweight davits lift performance

Resilience and reliability are performance prerequisites for the Cape Class fast patrol boats operated by the Australian Border Protection, but so are stability and rapid deployment for the craft protecting Australia’s borders. Every kilo saved in onboard equipment weight can deliver enhanced vessel stability, additional payload, or both.

That is why the PLAR-6500 davits from Vestdavit working on board the 58.1m length patrol boats are some 30 per cent lighter overall than the equivalent all-steel boat-handling system.

The self-tensioned davits are nonetheless fully SOLAS-compliant, and feature shock absorbers, guiding rails, wire haulers, hydraulic end stops and independent HPUs that are all delivered to Vestdavit standards of excellence. Two PLAR-6500 davits are fitted per vessel, each capable of lifting Rigid-hull Inflatable Boats (RIBs) of 6,500 kilos.

Vestdavit used high grade aluminium to deliver weight-saving davits for the Cape Class, which need to safely deploy and recover boats at speeds of up to 10 knots in heavy seas that stretch from the tropics to the Antarctic. The lighter weight option is also preferred by the Royal New Zealand Navy, the Danish Navy, the Swedish Navy, the US Coast Guard and other customers, all of which  operate fast patrol boats.


Vestdavit keeps crews working safely when others have to stop

In an uncertain world, navy and coastguard vessels need handling systems they can rely on, perhaps, now more than ever before. Vestdavit’s boat-handling systems are designed to perform, so that patrol, raiding, rescue and interception duties can call on flexible and reliable equipment that is ready to respond to fast-changing situations, even in high sea states.

Security and humanitarian issues need rapid responses. Vestdavit supplies and supports tailor-made solutions to launch and recover boats in high sea states safely, swiftly and in the wide operational windows users require.

Since 1975, Bergen-based Vestdavit has supplied over 1,800 davits and side and stern launch systems. When customers commission a Vestdavit boat handling system in an uncertain world, they also access our experience and engineering knowledge, plus a timely inspection service, a global service network, and a rapid-delivery spare parts system. Vestdavit does not just sell davits, we sell safe boat handling for life.

Vestdavit offers speed boost or power saving choice

Client consultation and a full internal technical review have prompted Vestdavit to refine lifting speed vs power options available across its entire davits range. The boat handling specialist has been focusing on how best to optimise equipment hoisting and lowering speeds within available power constraints, or reduce power while maintaining speeds.

“Optimising the handling speed/power balance is a precondition for our equipment, but customers have different priorities,” says Thomas Nordin, the Vestdavit Senior Project Engineer with responsibility for the review. “For some, market conditions have made it imperative to save power. Others are focusing on achieving higher hoisting speeds because their priority is the safety gain of lifting boats more quickly clear of the waves. Customers have been asking us for the same handling speeds with lower power consumption, or higher handling speeds with no increase in power.”

Where accumulators are used to store the hydraulic power used during davit lifting and lowering, increasing the hoisting speed may only be a matter of boosting accumulator specifications, Nordin explains. If the customer’s priority is to save power, the capacity of the HPU (hydraulic power unit) can simply be reduced for lower speed operations.

“The Vestdavit view is that the performance standards formulated for davits by IMO include operating speed guidance that we don’t think is optimal for safety, particularly when lifting boats clear in rough seas,” Nordin says. “Customers are asking us for higher speed operations using the same power, particularly in the offshore and naval markets.”

In the case of already operational davits, market conditions are encouraging customers to seek power consumption savings while maintaining existing speeds, he adds. “In this case, options could include retrofitting accumulators or, where accumulators are already installed, assessing the need for additional valves or valve capacity to improve oil flow. Space can be a constraint if the HPU needs a larger tank volume, so it is always a case of precise calculations and close consultation with our customers.”

Given the precise nature of the speed/power trade-off, Nordin says a generic solution is not appropriate. Vestdavit is trialling equipment at its own test facilities in Bergen and Poland to support the calculations covering available speed/power gains for both newbuildings and retrofit solutions, he says.

“Our key focus is always on the operational effectiveness, safety and the reliability of our equipment,” says Rolf Andreas Wigand, Vestdavit Managing Director. “To achieve that, we work with our clients right through the product development process and follow that with a lifetime service commitment. Listening and collaboration drive innovation at Vestdavit.”

For more information:
Thomas Nordin
+47 40 48 42 50

Royal Navy prefers PLR-5000 for latest OPV duo

The UK Ministry of Defence has given the go ahead for BAE Systems to build two further Royal Navy ‘River Class’ offshore patrol vessels, in a move that signals good news for Vestdavit. The contract brings the total number of River Class OPVs now due delivery from Glasgow under the MOD’s ‘Batch 2’ ordering round to five, with all five to be equipped with davits from Vestdavit.

The 90.5 m length River Class vessels are not designed for combat. They will be globally deployable to operate over a range of 5,000+ nautical miles, and will be available for counter-terrorism, counter-piracy and anti-smuggling duties, as well as for policing fishing quota agreements.

All five of the River Class OPVs will be fitted with two Vestdavit PLR-5000 davits, the high specification units designed for multiple operations that are robust enough to perform in the harshest environments, up to sea state 6. Davit systems are often referred to as the ‘primary weapon system’ of an OPV.

The compact PLR-5000 davit is built to a modular, skid mounted design for easy installation and maintenance. It can be exchanged between ships or relocated on board an individual ship, to reflect changing davit requirements.

The first River Class OPV, HMS Forth, is due delivery in 2017.

Fully prepared for Polar Code

IMO safety standards are a minimum: entry into force of the Polar Code from January 2017 holds no surprises for Vestdavit, which has exceeded the new standards for many years.

A combination of climatic and economic conditions saw the number of cargo vessels completing the Northern Sea Route fall to 18 in 2015, compared to 71 in 2013. However, shipping’s appetite for adventure remains high, as demonstrated by Crystal Serenity’s cruise through the Northwest Passage in September 2016.

Over time, polar transit is likely to become a common occurrence, but the risks associated with polar conditions will not diminish. For these reasons, regulators have developed a new Polar Code, covering ship design, construction and equipment. As a marine equipment supplier whose reputation and market share is built on safe and reliable operations, the new Code holds no surprises for Vestdavit.

“The guidance given in the Code focuses on avoiding ice build-up on structures and key components, although it does not give specific failsafe temperatures,” says Atle Kalve, Vestdavit Development Director. “Our davits meet and exceed these requirements because they are built to operate reliably and without fail at temperatures as low as -40°C.”

To work in the extremes experienced in Arctic and Antarctic waters, davits need to be ‘winterized’, using special materials and components, Kalve explains. These include the special steels to satisfy temperature tests from different class societies, higher specification hydraulic cylinders and special cylinder seal kits.

Other system parts need to be heated, with heating elements required for exposed moving parts, including winch gears/motors and proportional control valves. Some components – such as hydraulic power units and electric cabinets – can be supplied with heating elements or installed inside, depending on owner preference.

“Vestdavit is well aware of the wording of the Polar Code and its requirements, and customers are welcome to contact us for further discussion,” says Kalve. “We are also happy to explain how and why Vestdavit has been building and testing its davits to temperatures as low as -40°C as a matter of routine over many years.” For extreme conditions davits for -52°C can also be delivered.

Champion for Service

A full davit inspection and service on the seismic vessel Oceanic Champion highlights why customers choose to work with certified specialists from Vestdavit when it comes to equipment renewal.   

Recent work at Frederikshavn’s Orskov yard, Denmark on the CCG Eidesvik vessel Oceanic Champion included a 10-day inspection and repair project covering two TDB-9000 telescopic workboat davits.

“This was typical of the 5-year inspection and repair projects we carry out worldwide, as far as it called for the ingenuity and deep knowledge only available from certified technicians,” says Vestdavit Service Manager, Kristian Moss.

The project included davit removal to the workshop; dismantling for internal checks; repainting; overhauling several hydraulic cylinders; davit reinstallation; and 10% overload testing overseen by DNVGL.

However, as with any service work the full scope only became clear to Vestdavit service engineers Kristian Aase and Jarle Reistad after inspection. “The scope of work also involved installation of new seal kits, replacing wire sheaves, hoses and lifting wire,” says Aase, whose service report includes an account of daily work done, with some days running to 14 working hours.

“Service is all about being available to the customer and flexible,” says Moss. “Our experienced service personnel also know the importance of developing a good working relationship with the partner yard to meet the customer’s requirements.”