Having the outboard(s) steerable would make the boat
incredibly manouverable, but most on separate pods tend not to be. Even if it wasa separate tiller system to main rudder(s) this would be incredibly useful in tight spaces.
As an aside, I have a mate who has a 4136 Perkins
bridgedeck mounted driving hydraulic props. Big advantage of this is only one engine
consumption) and the hydraulic motors take up a tiny amount of space in each hull
, maximising space in the aft cabins of each hull
Principle disadvantage is - only one motor
- as Mark and Nadyana are discovering on YT channel 'Wildlings Sailing'. Unreliable worn out OM36 M/B proving to be a headache for them in a similar single-diesel-dual-hydraulic set-up.
On the other hand, the clusterf**k that is 'The Mer and the Man' had one of their two outboards fail recently, and it was not so much of a hassle, as one was still operational, to get them to port. But the replacement didn't match the existing, so now has two sets of (different) engine
Outboards principal advantages being they are relatively cheap
, and can be hauled aboard for maintenance
and rebuilds relatively easily. Flipside is higher fuel consumption
and relative fragility, especially to internal corrosion
availability in remoter areas is also theoretically better, as outboards (especially Yamahas 30,40,60) seem to be ubiquitous in developing world. Ditto maintenance
As others have said, it's horses for courses.