I've wondered Exactly the same thing. As in mild seas, they're workable.
For instance, I worked with a longitudinal galley on a Cal 29
in F5. But in any more than that????
The one idea which comes to mind, is for the cook to wear something akin to a Linesman's belt/Climbing Harness Waist Belt. And for there to be a well
secured, horizontal, stainless steel
bar running the length of the galley. On which, there's a sliding ring, or a couple of them.
Then, on the front of the belt, there would be a short (6" or so) tether, with a Wichard snap hook on it's end. The type to which you can affix a braided handle to it's release pin. And that opens easily under load.
So that in an emergency
, it's easy for the cook to bail out. Either by pulling the release pin/handle, or by taking a step sideways.
But the sliding ring & tether affords the chef
a type of hands off support, so that they can use both (hands) to cook with. Or, if needed, also use one, or both, to assist in stabilizing themselves, via proper hand rails.
Though it's a far cry from being able to wedge yourself in place via feet & hips.
Also, I'm a big fan of the U-shaped galley, where the stove is at the "top" of the galley, towards the bow (or stern, in a pinch). That way, there's less danger
to the chef
, & it's just flat out easier to cook. As you're spending Much less time, & Energy, fighting gravity.
I got the idea from Annie Hill's Voyaging On A Small Income
, many decades back.
IMO, it's a wise rule
to Always make the chef wear either a waterproof apron, which extends from chest to ankle, or their foulie bibs. At least at sea.
Particularly as the 2nd worst burns which I ever saw incurred onboard a boat, were from a chef who spilled soup while wearing over the calf socks. For in his mad rush to tear off his socks... well, let's just say that it weren't pretty.
It's Semi-OT. But on those designs, there also seems to be an almost exclusive lack of proper sea berths. Particularly in the Saloon. Ditton on cabinets (or Pilot Berths) along the hull sides. As well as other simple, & proper things, like a plethora of handholds. Radiused furniture/cabinetry corners, & 101 other things which make a boat fit to go to sea in.
Anyone seen a wet gear locker with an powered foulies dryer of late?
So many of these boats seem to be styled more like a European Apartment, then something made to ply the seas.
As they may look pretty, but Function got lost in favor of Form.
Open expanses, & sharp corners Bite, in a seaway!