Converting A/C system to US from Singapore

We had a 44 Sea Ray come in that had been built for and used in Singapore.
The owner want us to convert the boat to US power since it will stay here.
I have not been able to inspect the boat myself yet but I expect to find a 220volt 50z set up.

I am thinking that a speed/governor reset on the generator should bring it up to 60hz and the rest of the job will entail swapping out equipment and outlets.
However, if the electrical outlets are are 220 I will probably have to do some reconfiguring on the panel to get them on 110.

TV's will all have to be replaced etc due to transmission standards and voltage.
I would think that stove burners and water heater would be ok as is.
I would have to see if the A/C units will operate on 50 or 60hz or if they will need to be replaced. Battery chargers too. etc. etc.
Electrical outlets will all need to be changed.

I will know more once I take a look at the boat and the existing panel.

I would also plan on keeping as many items 220v as possible for efficiency. That boat could probably run on one 50amp 220 cord but might be better off with one 50/220 and one 50/110 as I have seen on other larger Sea Rays in the area.

I know there are transformers available to make the whole boat convert but they sound expensive and it sounds like the boat will now remain in the US.

I know there are several guys on this list who have probably done this conversion before. Is there anything special I am missing here or need to consider?

I have taken a 110volt boat and converted it to a split 100/220 system with a new panel etc and did not have any issues. It seems like this should be pretty straightforward.

Thank you in advance for any EXPERIENCED advice.

Good point,
Anything changing from 220 to 110, I should recalculate wire size based on 110 and see if it need to go up. I could see that possibly coming into play on the outlet circuits.

Thanks KIWI

Yes, this is where it gets sticky and attention would have to be paid to the cord wiring. Any 220 equipment that has a 50/60z switch or alternate wiring scheme should work on the US 220 I would think. If it does not have that option I would replace it with a US version. I am guessing most things would need replacing.

Thanks TessIIc, your description is pretty much exactly what I had in mind to do. And yes, i was planning on having to reconfigure the stator connections on the genset. (I had to do that also on the boat I converted to 110/220 from 110). That brings up another point. I will also need to reconfigure the shore power/gen transfer switches to split up the 220 and 110.

I will look into the "convertors". The only problem with that is that you still have incompatible TV's and outlets in the boat. If you start changing some of that you could end up backing into doing the whole boat anyway...?

I am thinking the AC's will be able to do 50/60hz but again, I have not been able to get the numbers off the units yet to see.

I wonder if I should try to get a complete US shore power panel from Sea Ray or Flounder Pounder/Great Lake Skipper?

I did send an inquiry in to Sea Ray but it looked more like a "sales lead generator" system from the way the form was laid out. They have been helpful before. I will see what they say.

I wonder if the color coding will be an issue. US 220 is red/black- hot, white-neutral, green-ground. Euro colors are?

I am going to meet with the owner and check out the current equipment and configuration of the boat. I will give him the option of the convertor also.
We can probably make an informed decision after I figure out what equipment we can keep and what will have to be replaced.
I am confident we can get it right either way since we do this type of work every day but I will admit this would be the first "un-euro" conversion so I am being careful that I am not missing something.
Thanks for your help so far guys.

Looks like I am going to get little or no help from Sea Ray due to extended furloughs etc.etc...

Paneltronics made the original panels and can make me a US panel once I get them some numbers off the one in the boat. Got a parts book on the boat and it looks like the US version is all 110v. I am not thrilled with running four A/C units (boat has cockpit air) off of what looks to be one 30amp 110 cord and one 50amp 110 cord. The a/c units are all "50hz only" so they would all have to be replaced anyway but I would much prefer running those on 220.
Four 110 A/C units raises my concern for wire size in the boat. I would not need to run the extra wire for the third leg but I am pretty sure the 220 Euro units draw a lot less than 110 AC's will. The main inlet breakers on the euro unit are "smaller" which also makes me this this will be the case.
While making it all 110 simplifies the job, it seems to me like that is a marginal set up from the factory in the US version.
I have one of our distributors looking into a "convertor box" to see if that is a better alternative.
Who makes those? I saw that Charles had some but their website seemed very vague about the applications.