two issues on survey

It seems to be something important from a safety standpoint but not very expensive to correct.

but since you don’t bother telling us what kind of boat and shore power type you re dealing with it s difficult to give any intelligent answer

ground is critical so you have to make sure it is connected….

I agree with Pascal that without further details it's hard to help you understand the problem better.
That said, I would question the competence of whoever wrote the above anyway, because:

1) If the boat is equipped with onboard ELCI/GFCI device(s?), I see no logical reason why that shouldn't work as intended also if the GND dock connection is interrupted. Any onboard leak should trip such device regardless of whether connected to dock GND or not.
In fact, assuming that the boat is equipped with a genset or an inverter to provide AC onboard even when not docked, the protection device should work also whenever the boat is completely disconnected from the dock supply.

2) By design, Victron isolation transformers can work with either an AC supply anywhere between 88 and 130V (switching automatically to 115V output), or anywhere between 185 and 250V (switching to 230V output).
So, there's no such thing as a voltage "step-up" with those units, but it's rather a matter of voltage stabilization, within pre-set limits.
Anyway, in this case I agree with the recommendation to have that checked by a qualified electrician familiar with Victron units.

On second thought, ref. (1) above, it would be interesting to understand what exactly that guy meant by "no ground wire connection to the dock", because whenever the boat is equipped with an isolation transformer, by definition the onboard GND circuit is isolated from the shore GND wire.
That's in fact the main raison d'être of an isolation transformer!

This is correct. Isolation means Isolation. Your ship's bonding (green wire) is not connected to the ship's bonding next to you or anything up the dock.

I fear some lacking on the surveyor.

Found this in the Victron cut-sheet;
Note: The AC input voltage is raised by 1:1.05 ratio at the AC output.
This would be 115Vac to 120Vac.
Or 125.7 Vac to make 132Vac.
Does your dock really have 126Vac?

https://www.victronenergy.com/upload/documents/Datasheet-Isolation-Transformers-EN.pdf

Now, the big question is;
Since Victron only makes up to a 7KW isolation transformer, are we really looking at a Victron isolation transformer installation?

Now I m confused… if the ground isn’t connect to the dock when you have an isolation transformer, why having the green wire in the shore power cord in the first place? With an IT, the neutral isn’t used and many cords don’t have the white wire but they do have the Green

The green wire in the shore cord gives the cord a fault current path.
In some designs, the IT case is grounded to the shore. Follow the lead in post #5 above to see this installation.

Alloy hull will last a lil longer not connected with other boats on the same dock.
Still, I hope your survey included hull plate inspections and thickness testing.

This may be a similar model.

That's the reason why I asked what "no ground wire connection to the dock" exactly means.
In a correct IT installation, the shore cord should include GND, but the equivalent GND wire downstream of the IT should NOT be connected to it.
So, whoever checked the boat might (but I'm just guessing) have checked with his multimeter, finding no connection between onboard and shore GND, reaching the conclusion that there's something wrong.
While that's precisely how ITs are meant to work!

Yep.

However, I have found some installs with simple ITs & green connected all thru, but with galvanic isolators behind the panels.
With factory prints reinforcing this schema. Never figured this out and left alone.

That's indeed weird.
Having GND directly passing through an IT and fit also a galvanic isolator is akin to having a parachute and not deploy it in the hope to land on a mattress!

Then again, if you worked on boats for many years, I'm sure you must have seen even more funny arrangements...!

Sadly,, I have witnessed some stuff...
I hope we have answered Brother gr8trn's questions and were of help.
Sorry to expand on his thread.
I hope to hear more of his purchase and adventures.
An all alloy hull has to be an adventure. Then a mast on top.
Working on alloy Strikers and Roamers, I have some experience here (without a mast).

Thank you, because this is where my interpretation was going...all that travels from boat to dock are the lines and the ground. Once aboard everything is isolated, and only the lines pass through.

Problem is that you'll need a marine electrician to review and write his summary to be shared with the surveyor and obtain a corrected article. Metal boat, you'll want to be **** certain that your electrical systems are dialed in.