A first time for everything ?

[oldgit]

Helped to lift out a boat with IPS yesterday.
Yard not lifted something like this before and concern about getting the slings in the right position.
All done and dusted. Now on the hard and awaiting a visit from the folks at Volspec for servicing.

 

[Plum]

Helped to lift out a boat with IPS yesterday.
Yard not lifted something like this before and concern about getting the slings in the right position.
All done and dusted. Now on the hard and awaiting a visit from the folks at Volspec for servicing.

Interesting. I hope someone now puts sling point markers on the gunwhales.

 

[PCUK]

Helped to lift out a boat with IPS yesterday.
Yard not lifted something like this before and concern about getting the slings in the right position.
All done and dusted. Now on the hard and awaiting a visit from the folks at Volspec for servicing.

Are these more acceptable to you than outdrives?

 

[Parabordi]

Helped to lift out a boat with IPS yesterday.
Yard not lifted something like this before and concern about getting the slings in the right position.
All done and dusted. Now on the hard and awaiting a visit from the folks at Volspec for servicing.

Looks like where I am coming out water in march

 

[ari]

Are these more acceptable to you than outdrives?

That's a very interesting question!

 

[Lodestone]

You can't trim them like outdrives and they don't like hard turns at speed - which presents a problem when turning the tables on jetskiers by playing in their wake.

 

[Bouba]

You can’t put a sling on shafts either

 

[Dino]

The drives are designed to shear off if they hit bottom. I could never live with the risk of €40-50k hanging under the boat, but I do most of my boating on inland lakes

 

[Bouba]

The drives are designed to shear off if they hit bottom. I could never live with the risk of €40-50k hanging under the boat, but I do most of my boating on inland lakes

Can you put bungee cords on them so they can be recovered ?

 

[PowerYachtBlog]

The drives are designed to shear off if they hit bottom. I could never live with the risk of €40-50k hanging under the boat, but I do most of my boating on inland lakes

I am not an IPS fan but if you shear them off, recovering them is the least of your problems.

Also sometimes the shear off can fail. It is has to be a real clean knock to the drive for it to shear off. The problem is if they do not shear off cleanly the gasket does not seem to work and they sink.
This was a case from 2009. Sunseeker Sport Cruiser Partly Sinks Following Volvo IPS Failure
I think there was also a case of a just sold used Prestige 42 S in Scandinavia which totally sank with a similar outcome in around 2012, which I did not cover back in the time.

 

[westernman]

The selling points for IPS are:-

1) Easy joystick manoeverbility.
Get bow and stern thrusters. Much cheaper.

2) Better fuel consumption.
But you will never do enough hours such that the fuel saving pays for the regular gasket and fluid change. It is very expensive oil which is needed, and you need lots of it.

3) Goes faster for the same HP.
With the extra cost you can easily get a bigger engine more than able to make up that difference.

4) You can put the engines further back to make more space for accommodation.
Use a V drive.

Anything else?

 

[Alicatt]

The selling points for IPS are:-

1) Easy joystick manoeverbility.
Get bow and stern thrusters. Much cheaper.

2) Better fuel consumption.
But you will never do enough hours such that the fuel saving pays for the regular gasket and fluid change. It is very expensive oil which is needed, and you need lots of it.

3) Goes faster for the same HP.
With the extra cost you can easily get a bigger engine more than able to make up that difference.

4) You can put the engines further back to make more space for accommodation.
Use a V drive.

Anything else?

A thought...
Can I put my saildrive on backwards to imitate the 'prop first' mode of operation and see any improvement in seed/economy... asking for a friend.

Would also have to modify my "keel" though

 

[Bouba]

The selling points for IPS are:-

1) Easy joystick manoeverbility.
Get bow and stern thrusters. Much cheaper.

2) Better fuel consumption.
But you will never do enough hours such that the fuel saving pays for the regular gasket and fluid change. It is very expensive oil which is needed, and you need lots of it.

3) Goes faster for the same HP.
With the extra cost you can easily get a bigger engine more than able to make up that difference.

4) You can put the engines further back to make more space for accommodation.
Use a V drive.

Anything else?

Yes, the last time I was at a boat show it was very difficult to find a boat without pods

 

[PowerYachtBlog]

The selling points for IPS are:-

1) Easy joystick manoeverbility.
Get bow and stern thrusters. Much cheaper.

2) Better fuel consumption.
But you will never do enough hours such that the fuel saving pays for the regular gasket and fluid change. It is very expensive oil which is needed, and you need lots of it.

3) Goes faster for the same HP.
With the extra cost you can easily get a bigger engine more than able to make up that difference.

4) You can put the engines further back to make more space for accommodation.
Use a V drive.

Anything else?

1. I am a good handler, but after a Sea trial a storm with wind gusting thirty plus knots arrived, and it made everything easy, I think I might have failed a bit in this situation if the crew missed catching a rope.
2. Debatable. But a Sunseeker 65 Manhattan with IPS vs shafts and Man engines needed 30/35 hours to recover extra servicing expenses of the pods. So thirty hour is a ball park number.
Also in this case the IPS was at a disadvantage as the hull was designed by shafts.
3. Again very debatable but against IPS, as Volvo pushes a moderate V-shaped hull of 15 degrees or less. But most important is that also in-front it needs to be flatter.
4. Agreed.

 

[oldgit]

That's a very interesting question!

Some would suggest that IPS has inherited all the old problems of outdrives with couple extra added for good measure.
OG of course, could not possibly comment.