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  • Medsailor, would one of the the NZ ships suit the needs of the AFM?

    Looking at the specs they seem similar in size, speed, displacement, etc. to the P61.

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    • No Navy can withstand transient political meddling. The IPV's were doomed to failure when their use became mostly civilianised, working for Police, Coast Guard, Fisheries. There was a question of restrictions in boat deployments at sea state 4, but expected to survive up to sea state 8. What happens if you get caught out in the Southern Ocean Storms . It might indeed be better in an inland sea but that is a question of investigation and trial.

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      • Originally posted by ancientmariner View Post
        but expected to survive up to sea state 8.
        The link I posted said SS5

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        • True in the Government data sheets of 2010. Naval Technology site gave SS5 for deployment and SS8 for surviving. From the start a vessel restricted to a 4metre sea has no business being at sea off New Zealand. Weather is not predictable and any vessel with that restriction could easily be caught out between ports of possible refuge. My hunch is somebody got a fright and their use was restricted to an occasional sortie.

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          • Bearing in mind when taking about a C-Mine / C-IED capable CPV we could be simply talking about a vessel capable of carrying 3-4 X TEU and:

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            • The Danes have actually now taken the Flyvefisken-class out of service and is selling them off mainly to Lithuanian Navy. The design would form a basic of a good "Coastal" Patrol vessel which would have good MCM capabilities. The hull is GFRP which makes it excellent for this type of work. The original design is a little over-spec'd for the NS as it has Harpoon and ESSM as part of its option weapons fit (that would scare the beam counter too much). Also as it had to operate as a FAC it has a gas turbine as its main engine. Even so it could be redesigned easily, and to get an idea of how useful they could be two could be leased for a year or so. If the trial was good then we could oder some modified new builds.

              Just to note that the Flyvefisken-class are the same tonnage as the old Ton-class minesweepers: to give an idea of size.

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              • Not a surprise that an IPV does not perform well 200miles offshore, Inshore as every sailor will tell you is 5nm, 12nm brings you to coastal.
                Important is you use things for what they are designed to do and not what you hope they can do on the side. The Germans leanrt this the hard way withe the F104, excellent as a bomber interceptor, a bit sh.. as a low level ground attack aircraft.

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                • As a replacement for the Peacocks we could consider the HSY55A class of patrol boats built in Greece (we give them aid they give us the boats!!). At just under 600t they would need little re-engineering for our purposes and we can recycle the OTO's from the Peacocks.
                  (Sorry for the music)

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                  • If the Peacocks are 700 tonnes and 62 metres long and can't put to sea in all weathers .....

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                    • Originally posted by EUFighter View Post
                      As a replacement for the Peacocks we could consider the HSY55A class of patrol boats built in Greece (we give them aid they give us the boats!!). At just under 600t they would need little re-engineering for our purposes and we can recycle the OTO's from the Peacocks.
                      (Sorry for the music)

                      [ATTACH]8293[/ATTACH]
                      I have seen that class of vessel up close, and she wouldn't make it past the Cork Buoy at any time between October and April.
                      So if you really want a patrol vessel just to work within the confines of Cork harbour....

                      Have you ever been to sea?
                      Last edited by na grohmiti; 19 June 2016, 14:45.
                      For now, everything hangs on implementation of the CoDF report.

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                      • Originally posted by na grohmití View Post
                        I have seen that class of vessel up close, and she wouldn't make it past the Cork Buoy at any time between October and April.
                        So if you really want a patrol vessel just to work within the confines of Cork harbour....

                        Have you ever been to sea?
                        Whatever about it's handling capabilities (and just looking at the pic you can see the "low" freeboard, but why would we want to look at 20 year old hulls to replace 30 year old hulls?

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                        • No reason to doubt its seakeeping but barely a step beyond the customs cutters/uni boats and most likely very uncomfortable/wet in a f7+. Couldn't tell if she had a stack, seemed to be exhausting through a glanded hull fitting.

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                          • Originally posted by danno View Post
                            No reason to doubt its seakeeping but barely a step beyond the customs cutters/uni boats and most likely very uncomfortable/wet in a f7+. Couldn't tell if she had a stack, seemed to be exhausting through a glanded hull fitting.
                            Have worked with them, very lively in sea state 4-5 and rather top-heavy. Designed to work in the areas around the islands in the Aegean. Confirm the hull exhausts although these generally work relatively well if properly maintained. If not can be the weak point on a hull.

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                            • Great feedback, nice one Medsailor

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                              • Minimal draught

                                With a draught of 1.9 metres, the MRAV 660 is suited for very shallow coastal, riverine and inland water operations. In addition to shallow water hydrographic surveys, this vessel is capable of a comprehensive array of duties such as diving operations, EOCD support, ROV and UAV deployment, with a core crew of 8 and capacity for an additional 15 specialists.

                                “Damen has built up a lot of knowledge on shallow draught ship design – this is the reason we strived towards a shallow draught hull for the MRAV 660 with full confidence. The expertise of our Research Department, combined with input from our Workboats Product Group contributed to a design based upon tested design solutions,” notes Damen Design and Proposal Engineer Tim Viveen.

                                “The key points are to maximise displacement, minimise resistance and optimise seakeeping characteristics for the area in which the ship will operate. The MRAV 660 has design characteristics that help achieve this: an aluminium superstructure and reduced freeboard section cut down on weight. And tunnel ducts on the underside of the hull ensure enough water reaches the propellers.”

                                Additional roles

                                The MRAV 1600 is designed for littoral and regional offshore operations. Its larger size allows for greater endurance and carrying capacity of both crew, mission modules and cargo. The vessel will be manned by a core crew of 13, with capacity for an additional 30 mission specialists. The main deck can hold six standard 20-foot mission containers and the below-deck cargo hold can store two 20-foot containers and palletised cargo.

                                This medium-sized vessel can take on similar hydrographic and auxiliary duties to its smaller sister vessel, with the addition of torpedo recovery and overhaul tasks in support of submarines and anti-submarine warfare units. Small scale coastal transport and infantry support is also possible.

                                Global coverage

                                Intended for worldwide service, the capacity of the largest vessel in the range – the MRAV 3600 – allows for more than one specific mission during a deployment. Capable of hydrographic operations both in littoral and deeper waters, this vessel also has a helideck and substantial storage capacity for other mission configurations, equipment and cargo. Furthermore, the MRAV 3600 can serve as a base for more extensive operations such as disaster and humanitarian relief. There is accommodation for 14 core and 45 additional mission crew and enough space on board to provide emergency hospital services for 50 to 60 people.
                                Capable of hydrographic operations both in littoral and deeper waters, Damen Multi Role Auxiliary Vessel 3600 also has a helideck and substantial storage capacity.

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                                Clearly these would be quite a departure from anything currently in service

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