Timber for Boat / Hull Docking Blocks?

[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.

Edited 2 hours ago by Whoppa Choppa

[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,

[skc101fc]

Well what a knob !! 

I misread/misunderstood the title, and thought this was about some obscure traditional method of making propellers (props!) out of timber. I kept thinking that's going to take some special grain choice, along the lines of spiral turkey oak or something similar. Only today realised it's about propping boats upright ..doh! 

[rapalaman]

32 minutes ago, skc101fc said:

Well what a knob !! 

I misread/misunderstood the title, and thought this was about some obscure traditional method of making propellers (props!) out of timber. I kept thinking that's going to take some special grain choice, along the lines of spiral turkey oak or something similar. Only today realised it's about propping boats upright ..doh! 

Not the only one 👍

[Squaredy]

14 hours ago, Whoppa Choppa said:

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.

If I were in your shoes I would try and find out more about their need.  Ie size of each prop, how long they are expected to last, will they be in use in all weathers for years, or just for a season and then all dumped, etc, etc, etc.

 

Will these go at the bottom of a dry dock and have many thousands of tons of ship on them and be expected to last for decades?  Or on the other hand just be randomly used to haul small pleasure craft out at a little boat club and a couple of years life is more than enough.

 

By the way, when they say redwood, you do appreciate they probably mean pine?  Actual redwood would only be used as boat chocks if they specifically had to be really soft.

[Stubby]

Green heart / purple heart . As used for pilings / groins on the beach . Hard as a hores arse though . Will blunt saw blades and chains pretty quick but will last for ever in salt water or ope air . 

[openspaceman]

26 minutes ago, Squaredy said:

 

By the way, when they say redwood, you do appreciate they probably mean pine?  Actual redwood would only be used as boat chocks if they specifically had to be really soft.

Yes I was thinking redwoods would be too soft and lack strength. I get the impression elm is fine if totally submerged or buried, less so if wet and dried.

 

We looked to sell shook oak for groins.