Nick_H
Well-Known Member
They could almost achieve the same accommodation space with conventional shafts, as the IPS units are connected by jack shafts to the engines which are mounted further forward.
New Princess P48
- Thread starter Princess52
- Start date
They could almost achieve the same accommodation space with conventional shafts, as the IPS units are connected by jack shafts to the engines which are mounted further forward.
Anders_P42
Well-Known Member
You're not wrong, although I think their plan is slightly off showing the location of the Pods. When I overlaid main deck and lower deck in photoshop the pods looked like they were sticking out back slightly.
Engine wise I think they've gone for IPS650 which is D11 at 510hp. Wonder why they chose this and not Cummins Zeus using 2 x 550hp QSB 6.7? A lot of extra weight in the D11's.
PowerYachtBlog
Well-Known Member
Agree with you on Cummins, much better to Volvo in every area including the ZF Zeus pods which also are more standard deep modified to medium Vee (write 15 to 18 degrees here) shape friendly and do not need much thinkering in the middle part of the hull shape as the IPS pods need.
But Volvo is a win win situation for the Scandinavian Northern European market Princess have a nice share of. I think Cummins do not have a lot of dealers up there.
Last edited:
PowerYachtBlog
Well-Known Member
They could and have been used since a couple decades by some builders. Ferretti has used it in some of the sub sixty feet models for example, and also some other known builders.
Problem is shafts does not entice new (read noobs) buyers as much as IPS. The promo of IPS makes you believe you can do anything with it, in reality you can do the same with shafts and a thruster without having all those electronics.
Also in my opinion but up until more or less ten years ago I am surely spot on, the Olesinski hull needs a rethinking to have this set up and for a change will need no prop tunnels or reduction of size of the tunnels.
Have seen re-used hulls of some of the Olesinski (Fairline / Princess) models and just by moving engine backwards a feet or less the boat in question has really gained a high angle on the plane, and slow planning speed of 18 knots or more.
Might be superfluous data for some but very important if you do a few long cruises and you get some head sea. For example some boats with surfaces drives need less speed to that to jump on the plane.
Last edited:
Anders_P42
Well-Known Member
I don't know much about the boat building aspect, but local service and parts would certainly play a factor in their decision. I'm still not convinced pods are required, one of their P50 models had v-drives with D11 engine and that was 1" less LOA. Chuck a stern thruster on if you want piece of mind, not a whole pod system.
Latestarter1
Well-Known Member
Interestingly Cummins is well regarded in Northern Europe and whilst not the same level of dealer coverage as VP good population of very well trained dealers in most locations.
I have inbuilt hatred of out-drives and pods but when it comes to IPS Vs Zeus user functionality Zeus is streets ahead and I have driven both. Features such as the auto trim tab integration, AP with auto yaw correction and very responsive hydraulic steering activation all make a far better engineered package.
On a practical in service front annual Zeus annual lube change can be carried out without a lift and there is no 5 year strip and service.
For the P48 my vote a nice fit would have been Cummins QSC 8.25 600 hp/Zeus.
Sadly when the chips are down V.P. will 'buy' the business they know Cummins will never try and match them on price.
Last edited:
Anders_P42
Well-Known Member
Volvo may have relaxed their pod oil changes, service protocol shows oil change every two years and now allow in water changes to be completed where only 80% oil is changed. They stipulate every third change must be out of water so all oil is replaced.
doug748
Well-Known Member
I have not the slightest idea what you are all talking about but Wednesday's Plymouth Evening Herald carried a 16 page pull out for the 50th anniversary.
Quite interesting but no mention of a P48. I expect it is on it's way though.
Quite interesting but no mention of a P48. I expect it is on it's way though.
