http://www.youplay.it/play/ws_GameMove.asp?GameID=632933&UserID=edwardlaneuk

at least on Turn 23 and definitely on the current turn (24) there appears to be a bug with movement for Duc Bourgogne.

It has no rigging, but it can't rotate - clicking that says 'unable to move' but the rules say

It's acting as if I'm fouled - and the nearest other ship is 2 hexes away.

I thought perhaps I'd got that wrong - and that the rule said ships with 0 move could still rotate "unless they had zero rigging"?

but now (belatedly) checking closer I see that

So (not suspecting a bug) I sailed conquerant toward royal oak 'safe' in the knowledge that he couldn't rotate to rake me as I approached.

But that's obviously wrong (as Royal oak - who also has no rigging) did turn to Rake me.

Perhaps the rules are different for 1sol and 2sol that don't have rigging?

Regardless of its movement allowance, a ship may always turn once per turn. EXCEPTION: Fouled ships and riggingless ships (see below).
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When a dismasted ship (lost all rigging) is drifting, it will have to wait 1, 2 or 3 turns between each 60° turn depending on its turning ability:
A ship with turning ability of 3 waits 1 turn.
A ship with turning ability of 2 waits 2 turns.
A ship with turning ability of 1 waits 3 turns.