Sorry, I can't. I just a serious hobbyist. I do know that the Queen Mary 2 is powered by 4 pods, two stationary, and two azi-pods. The azi-pods and bow thrusters are sufficient to maneuver the ship in harbor without needing tugboats. The ship can spin on its own axis.
--- In electricboats@yahoogroups.com, "Galstaf" <richard@...> wrote:
>
> Thx Dan,
>
> Can you or anyone recommend a reliable manufacturer for such things?
>
> --- In electricboats@yahoogroups.com, danbollinger <no_reply@> wrote:
> >
> > Those units are sometimes called azi-pods if mounted on the hull, or z-drives if mounted over the stern. The huge Queen Mary 2 has azipods with bow thrusters. It can dock without the need of tugboats.
> >
> > You'll have to ask the mfgr. about duty cycles.
> >
> > Dan
> >
> > --- In electricboats@yahoogroups.com, "Galstaf" <richard@> wrote:
> > >
> > > Hi all... been following the group for a couple of weeks now with interest and am putting together my plans for an electric catamaran around 50 feet in length, 17 foot beam and about 25000-30000 pounds total weight. Estimated draft is about 20 inches.
> > >
> > > I am working on control systems and have heard of these "easy docking" systems that consist of an electric motor that can rotate in any direction and is guided using a joystick type "drive-by-wire" situation (no mechanical connection between steering control and the actual rotating rudder/propulsion mechanism).
> > >
> > > What I am wanting to do is use this type of system with electric wire controls for long distances (hours at a time) *instead* of having a docking system and a main drive/rudder setup.
> > > Ideally, when coming into dock, the same system can then be used to drive the boat sideways, forwards, backwards, whatever for easier docking. It could also be a great system for emergency maneuvers if ever necessary.
> > >
> > > So for those with far more experience in these matters, I have a few questions.
> > >
> > > 1. Is it possible to put together one of these systems to power the boat full time... i.e. drive the boat in a mostly forward direction for hours at at time with no ill effect?
> > > 2. Can these motors be used effectively up to around 10 knots without excessive drag on the hull? Would the propeller size/style need to be changed? (Typical target cruise speed is going to be 4-6 knots).
> > > 3. Can anyone that is actually using a system or is intimately familiar with one in actual usage make a recommendation for a brand and type of these docking motors for a craft of this sort of size?
> > >
> > > Thoughts and comments from experienced mariners is sincerely appreciated!
> > >
> > > My Best,
> > > Bill
> > >
> >
>
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