Timber for Boat Props?

[Whoppa Choppa]

Been asked to supply logs for milling into boat props. They asked me if treated Spruce would suffice instead of Oak or Redwood but I'm sceptical.

 

I've assumed dry dock obviously, quayside..

 

Any ideas?

 

Got plenty of mac and pine in stock.

[Stubby]

Alder ? 

[Tree monkey 1682]

Elm, if its good enough for locks 

[Whoppa Choppa]

I can find Oak and DF at a Military Surplus described as "Docking Blocks".

[spuddog0507]

In th late 70s early 80s we used to cut a good amount of blocks for supporting boats on that where out the water for maintanence for Fleetwood docks, so these would of been for some big Icelandic sized  trawlers back then, if memory serves me well most of these would be 24" down to 12" square and from 4ft to 2ft long, we all so used to cut some big wedges as well and all cut out of Elm but back then elm was every where and for little money, today it be a bit difernt cost wise,