How long does a cargo ship take to get between Australia and Europe or the North American west coast? I imagine it’d be a few weeks at least to LA, and longer to, say, Piraeus or Marseille via the Suez Canal, during which you hope neither side needs those helicopters.

I didn’t even think of the helicopters, but yes, that transport is relatively easy. My experience is tangentially related to the fixed wing jet tankers.

I think that firefighting activity stresses airframes more than usual as well, so I was also estimating from that maintenance side.

I figure that it could be done, generally, but timelines would probably be tight and costs could escalate quickly, both financially and environmentally.