Ngati
I think we are in agreement on this. My point was the same - it doesn't take an Orion to do inshore SAR and fisheries patrol. Better to use a low-end or civilian-spec platform for these, saving your high-end Orions (or, touch wood, Poseidons) for more challenging missions.
My concern is that there will be pressure to militarise or otherwise gold-plate a second-tier platform until it gets to the point where it costs a significant percentage of the high-end platform but with far lower capability. I would suggest a basic search radar and optics turret are must-haves, but definitely no capability to carry weapons. We should aim for a low-end platform for low-end tasks, and be wary about capability/mission creep.
Otherwise there is a risk we will end up with a kitted-up second tier platform and no first tier.
We have been down the track of modifying commercial kit and stuffing it up leaving us with an expensive mess and no capability. Remember HMNZS Charles Upham. Canterbury is not ideal and has some issues. We are a maritime nation with the worlds 5th largest EEZ and continental shelf area, it being larger than Europe. NZ Exclusive Economic Zone = 4,000,000 square kilometres and the NZ Exclusive Economic Zone = 4,000,000 square kilometres
Map of the Continental Shelf Boundary | Land Information New Zealand (LINZ) - Toit Therefore it is not in our economic interest to do the monitoring on the cheap. The NZG has realised that cheap at the beginning usually turns out very expensive down the track. So they've decided to buy MOTS or COTS without any adventurous risky bespoke unique kit. However we need something that is going to last the distance; operate for 30 - 40 years in conditions that are not optimal. Something that can take the southern mid latitude conditions that put a lot of mechanical strain on an airframe and are at the same time corrosive. So it has to be something fully investigated and chosen carefully. That is one reason why I've pushed for a purpose built designed and built aircraft rather than a conversion of a civilian pax aircraft. On that note I have looked at the CN235 and think that would be ideal. I posted earlier about it.
Tod
I agree on the need for radar/optics, but am unconvinced by the need for a really long 'on-station' time. At 15 knots for a fishing trawler, if the low-end platform has to be replaced by another aircraft, or even nip ashore to refuel, it isn't going to take too long to re-locate the target.
As for the Pacific EEZ patrol, it's an important commitment for the government, but could continue to be performed by the higher-end platform. Mind you, last time I was in Aggie Grays Samoa, the RNZAF crew in the pool looked as if they would happy to be there for a full week with a smaller plane rather than three nights with an Orion.
Loiter time is very important as Tod explains.
I understand, but disagree re: loiter time, for a few reasons.
First is that NZ has a sizable EEZ, and not all of it is adjacent to either of the main islands. A high loiter time would enable a 2nd tier aircraft to get on-station, and then actually perform some worthwhile patrolling.
The other is partially a matter of jurisprudence. I am aware of cases were Australian authorities prosecuted the crew of a trawler for illegal fishing, one trawler had to be kept within sight of the pursuing vessel until capture to maintain the chain of evidence. I do admit I am not certain if things would be similar under NZ law, but a vessel found fishing illegally in NZ waters could be detected by an aircraft, but would still require a RNZN vessel for capture/seizure, or if it occurred within range of a RNZAF helicopter. Depending on location and NZDF operations at the time, the range might easily be too great for a NH-90, and a RNZN frigate or OPV might easily be nearly a day away. If the suspect vessel needs to be kept under observation until a RNZN vessel can take custody, a high loiter time could help maintain such visual contact, and easy the burden if/when aircraft & crews need to be cycled through and rotated.
-Cheers
As far as I am aware NZ law and Australian law would be similar and the chain of evidence is very important. For 40Ss info when a suspect vessel is sighted and a decision is made to board it, said vessel must be kept under visual observation until the boarding party give the all clear. This is because during any gaps in surveillance incriminating evidence could be ditched over the side and deep sixed. When I was in the navy and we did boardings we always had the RIB deploy on the far side of the suspect boat after we boarded it in case things were dropped over the side. It happens.
We've done the EEZ monitoring etc., until the present with the Orions but in days gone by other aircraft would be out there on navexs etc., show the flag and at the same time saying we are watching you. The Skyhawks used to do low level navexs at sea, the Andovers and other aircraft as well. Now not so many aircraft so not so many eyes. The Orions are now being tasked with ops that are well beyond the scope of MPA so they do have to be supplemented in the MPA role with something. If not, the EEZ monitoring and MPA role will slowly be eroded.
If we can acquire something like the CN235 and fit it out with the current Orion tactical system instead of FITS, then we can utilise the current weapons used on the Orion and maybe the Seasprite if we need to. Everything is then a known quantity and quality. Come Orion replacement time then we have spares for the tactical system and hardware on the CN235. My 1 cents worth.