Rodman 41with IPS.

[Portofino]

Here is a front view .
Actually we are just running down a FB IPS boat , come on ari name that boat mid vid

 

[BruceK]

I had another look at your wake story and bow rise thing.

Here's a flatass on stern drives reaching for a slam dunk, and failing badly. Is planking still a thing?

 

[Portofino]

Well while you are doing that lets have another look at Itama's

Awful

This one looks like it's in danger of rolling back into it's own hole. Talk about inefficient use of power

Does this one have IPS?

Love the way this one slices through the wake like a hot knife through butter

Porto is back. Hiya

But are doing what ari is whinging about ?
9issing around with stills.
My Vid s trump your stills .Obviously bit tricky to vid your own .
But ( Ok it’s an Itama ) heres another vid to show this mid engine , low prop shaft angle , deep v thing .Note the speed and the running plane .The AoA .
Incidentally this is quite good as most of the top hoteliers run Itama in Capri for boat transfers .Theres a reason .
Picture the scene a plane arrives from LA of JFK to Naples , bit late , 15 mins to the marina from the airport .
” sorry folks it’s too choppy to take you to your hotel “....not what they want to hear is it ?

“ How longs the crossing “ asks the tired jet lagged America ?

“ it won’t be long sir “ answers the boat man

 

[BruceK]

All I can say is that driver has some skills and all the others dont have trim tabs.

Anyway, I'll pop loads of vids on if you want but here's some more of flatass the naval architect reject reaching for the stars. Deffo a planker

 

[MapisM]

Completely impossible to tell from a single photo.
That's coming off a slight swell, the next photo 1/2 second later would show it with the bows well buried.

In that kind of sea? No way.
I didn't say that all Portofino 47 run like that - in fact, I also said that I'm not familiar with the model.
BUT, it is indeed perfectly possible, from that single photo, to tell that it shows a boat whose cruising attitude is awful, whatever the reasons - which I'm totally unaware of.

One thing I'm sure of is that I couldn't run my sedate f/b at an AoA anywhere near that, no matter how hard I could try, also in much worse sea conditions.
Just check out this video, and look at the horizon to see how much (i.e. how little) the boat is pitching in 5' waves.
Oh, and the camera was held at the level of my eyes while sitting in the helm chair.

That aside, I'm not sure of what you mean by trying to prove anything - I just say it as I see it, as always.
I might be wrong or right, but pretty much as anyone else.

 

[oldgit]

Well there you go. Your dogma just got rode over

Yet the dogma lives on ....just left our club after sitting at table with a chap going through an itemised bill to sort a pair of 290 Duo props on a Bavaria 33.
Lifts/blocking off/parts/labour and VAT. A grand total £8000.00.Needs new sets of S/S props as well.
Serious alloy corrosion on both legs simply due to lack of use and neglecting the constant vital and expensive servicing demanded by outdrives.
Accompanied the boat up to the repair yard last month , easy to track simply from the gear oil pouring out of the outdrives,
Outdrives ,use them a lot and they need contant attention, do not use them and they quitely fall to bits .

All the stuff in the water on a shaft boat is Phospher Bronze and Stainless steel.
Aluminium does have its uses in the marine enviroment, beer cans in the fridge
Rubber is also useful to make those little stoppers to stop your bubbly going flat after the bottle has been opened. ?

 

[Elessar]

You can say that again, ALSO with an IPS boat.
In fact, when (not if!!!) the joystick packs up, you are left with a boat whose maneuverability is precisely the same as a shaft boat.
And with no bow thruster, to add insult to injury.

No. it drives more like an out drive boat and not al all like a shaft boat.
edit sorry switch said that already.

 

[Elessar]

I know a few other IPS owners, none of whom have experienced joystick failures, I've also been round plenty of boat yards and I haven't seen rows of IPS powered boats in bits on the hard with damp eyed owners sobbing into their cheque books. I've been to plenty of boat shows though where most of the new boats are IPS powered . This isn't some new-fangled technology IPS has been around for 15 years. If it's so bad and so unreliable it would have gone the way of the Dodo years ago. My boat is 10 years old with 1100 hrs and I've had no joystick failures (touch wood as I type). Some people have a real downer on IPS on this forum perhaps they also bemoaned the introduction of powered steering and seat belts on cars or maybe they're just upset that the world isn't actually flat... but I can only speak of my own first hand experience as an owner with and my experience of IPS is overwhelmingly positive and I don't believe I am an exception. Let's just have a balanced view on IPS for a change please instead of this incessent scare mongering.

Not many people who have had IPS have downers on it and most of the tales of woe are anecdotal.
for me the joystick is a nice to have gimmick I’d happily have an IPS boat without one because I like the way they feel and handle.
But people focus on the joystick which is just a by product of IPS (and is available on stern drives and outboards now)

 

[ari]

Yet the dogma lives on ....just left our club after sitting at table with a chap going through an itemised bill to sort a pair of 290 Duo props on a Bavaria 33.
Lifts/blocking off/parts/labour and VAT. A grand total £8000.00.Needs new sets of S/S props as well.
Serious alloy corrosion on both legs simply due to lack of use and neglecting the constant vital and expensive servicing demanded by outdrives.

Lack of use and neglect leads to expensive problems, stop the presses!

 

[Portofino]

Lack of use and neglect leads to expensive problems, stop the presses!

Not with a wheel borrows simplicity, engineering wise .

 

[MapisM]

No. it drives more like an out drive boat and not al all like a shaft boat.

Not in my experience.
I did try maneuvering an IPS powered boat without using the joystick trick.
And I found it much easier to use the gears alone, as you would in any shafts boat, without touching the wheel.
WIth outdrive boats, you must resort also to steerable thrust because the force vectors are applied much more astern.
This is never true in IPS boat, whose forces are transferred to the hull in a position which is essentially identical to shafts.

 

[Switch]

Not in my experience.
I did try maneuvering an IPS powered boat without using the joystick trick.
And I found it much easier to use the gears alone, as you would in any shafts boat, without touching the wheel.
WIth outdrive boats, you must resort also to steerable thrust because the force vectors are applied much more astern.
This is never true in IPS boat, whose forces are transferred to the hull in a position which is essentially identical to shafts.

Of course you can drive an IPS like a shaft boat (without steering) but using the steering to vector the thrust (like a stern drive) is far more effective.

 

[MapisM]

Of course you can drive an IPS like a shaft boat (without steering) but using the steering to vector the thrust (like a stern drive) is far more effective.

I guess that could depend on each specific boat, and to some extent also on what the helmsman is more used to.
You can trust me if I tell you that I tried an IPS boat whose maneuverability leaving the pods centered was very decent, while she behaved more unpredictably when steering the thrust.

Anyway, I think the comparison with outdrives is not appropriate regardless, upon maneuvering.
With outdrives, I've yet to come across a boat where spinning her on its center with no b/t is anywhere as easy as with pods or shafts.

 

[Switch]

I guess that could depend on each specific boat, and to some extent also on what the helmsman is more used to.
You can trust me if I tell you that I tried an IPS boat whose maneuverability leaving the pods centered was very decent, while she behaved more unpredictably when steering the thrust.

Anyway, I think the comparison with outdrives is not appropriate regardless, upon maneuvering.
With outdrives, I've yet to come across a boat where spinning her on its center with no b/t is anywhere as easy as with pods or shafts.

“Anyway, I think the comparison with outdrives is not appropriate”

Really? Well, we’ll have to differ on that one. Having driven an out drive boat for 10 years and an IPS boat for
2 and a half years I’ve found them very similar in close quarter handling using steering and throttles without using the joystick.

 

[Elessar]

Not in my experience.
I did try maneuvering an IPS powered boat without using the joystick trick.
And I found it much easier to use the gears alone, as you would in any shafts boat, without touching the wheel.
WIth outdrive boats, you must resort also to steerable thrust because the force vectors are applied much more astern.
This is never true in IPS boat, whose forces are transferred to the hull in a position which is essentially identical to shafts.

Disagree. No pro walk due to duo props. So you need to vector the drive to step the stern one way or another if you don’t want forward motion.

 

[MapisM]

Mmm... Very short bursts in gear with just one engine did move the stern sideways with no meaningful fwd motion, in the IPS boat I tried.
Happy to accept that this can depend to a large extent also on the specific boat and not only on the propulsion, though.

 

[PowerYachtBlog]

IPS vs Shafts here we go again.

Rodman 41
Three years ago I sold a Sessa 35 Oyster to a client and he looked at Cranchi 43 Med with IPS. He liked the boat but wanted to jump on a flybridge.
So low and behold we find a Rodman 41 with IPS, which he liked we did a seatrial (fortunate) with about a meter wave and the boat felt not right. How the Italian say not meat and nor fish...
Anyways I found him a 41 with shafts Tamd73 Volvos and he is happy as ever. What a great boat she is with those engines, even if some details as a bit of a dull interior, and the extra bit glued hull are not entirely perfect.
For a 12 meter Fly with three cabins she has a lot of comfort.

Sunseeker 47 Portofino
IPS version is average while the D9 with 575hp is a great boat. 9 liter lump versus 5.5 l on a 15 ton boat really is possibly the main reason while the IPS does not work as intended, not only on the 47 but also on the 48 which had a modified hull suited for IPS. Those engines are small for a 15/16 t boat.
The IPS boat is wet and really everything does not go how it should, even tough at low rpm it does ride flatter to the shaft version which tends to even out once you go above 22/23 knots and becomes acceptable.
Anyways in 2007 I was travelling with my Gobbi 27 Sport (9.30 meter) just after the Strait of Messina I have 40 nm left to Porto Rosa with NW 4-5 beaufort wind blowing 1/1.5 meter wave occasion 2 meters or more on the nose starboard side. Following behind me at the entrance and at the fuel dock enters a 47 Portofino with IPS, drenched in all the salt and sea water the Tirrenian sea can offer, and they where coming a following sea down from Lipari Islands only about 18 nm.

Itama Pictures
Some of the pictures are good. The Forty with bow high, that boat really needs little tab as I have driven one, so possibly they stuck her in hump speed.
The 38 before it is near perfect. A little angle never hurts to say the truth up to 4 or 5 are widely acceptable.
The Itama which get a degrees of bow high are the new ones since they added stern weight to do the new sloop design Forty becoming 45 model, and 55 become 62.
Still acceptable ride especially on the 45, 62 does ride bow high under a certain speed up to 23 knots if I remember well and then it starts to even out. A solution they found is to put four interceptor style trim tabs and give them a couple of dots down.
Also FG Itama's are not as balanced as the old Amati ones, which had central engines and an aft cabin layout etc

 

[Momac]

Lifts/blocking off/parts/labour and VAT. A grand total £8000.00.Needs new sets of S/S props as well.
Serious alloy corrosion on both legs simply due to lack of use and neglecting the constant vital and expensive servicing demanded by outdrives.

How many years had it been since last lifted and the anodes changed ?
.

 

[paul salliss]

It's all a little pathetic reading some of these exchanges, classic forum bullshxt, I love shafts and have never had IPS so can not comment but for those knocking and bashing the relatively new IPS system ( 15 years) have you actually owned an IPS boat or chartered one for at least a week.......if not bog off you as sound rediculous

 

[Portofino]

It's all a little pathetic reading some of these exchanges, classic forum bullshxt, I love shafts and have never had IPS so can not comment but for those knocking and bashing the relatively new IPS system ( 15 years) have you actually owned an IPS boat or chartered one for at least a week.......if not bog off you as sound rediculous

Not quite but I have sat on three ( see my earlier posts ) in the marina , drinking Rose with the owners listening to there tales of woes why they are not coming out to play tomorrow.

Would have loved to actually go out , but they were busted awaiting technical help .
Wish they did work for the owners holidays etc .

Does that count......sat on one only because it’s bust?

But if you think my opinions / experiences I have posted on this thread would have had more street cred or less “ sound ridiculous “ I,am sorry to disappoint you .
Not as disappointed as the IPS owners .All newbies .