Aluminium Flat Bottom Work Boat

[Brad93]

Something....different, I like ribs, though that is not a pretty boat.
https://www.findafishingboat.com/aluminium-rib/ad-82143

Too big.

What Bob and Jim have posted above is exactly what we are after

 

[addjunkie]

Have a look at a company called alnmaritec, based up here in Northumberland. They do small work boats.

 

[Jim Davey]

If you are making a true flat bottomed boat it would be a very simple build indeed. You could do it yourself easily. 3-4 bottom sheet would curve easily enough with little effort. It’s when you go for a vee hull that the cutting for the curved hull sides and bottom become more tricky.

 

[Al Strachan]

Buoyancy tanks both ends so you loose a bit of space. Can cast a tape over it if you want.

Bob

View attachment 233235

ballast tanks?

 

[Brad93]

ballast tanks?

No buoyancy. Filled with foam. So it stays upright even if you take on water.

 

[Brad93]

Have a look at a company called alnmaritec, based up here in Northumberland. They do small work boats.

Very nice but a tad big for our 8acre lake

 

[Brad93]

I think I’m gonna make something anyway, should be cheaper that way

 

[Lazurus]

Loads on the Broads up here in Norfolk, not being used by the Broads Authority at the moment, they are great work boats and seen them loaded with everything from diggers to dredgers to weed cutters and piles. Have a weekend away and get some measurements and photos post lockdown, oh and when the fishing season starts.

 

[8ob]

ballast tanks?

Definitely buoyancy, if left over the winter it fills up with water but still wont sink. I think this one is just air space.

Bob

 

[Bullet2012]

Adjust sizes as required.

 

[addjunkie]

Have to agree with building in or fitting bouyancy, you can buy bags quite cheaply.

Having studied naval architecture, Id add some shape between the chine and the keel, it will add stability, and improve steerage, couple of small bilge keels assists here too. Adding a bit of boat shape increases the stability by increasing the vertical distance between the center of gravity of the hull and the center of bouyancy. Also reduces free surface effect to in the event of any water slopping about in it, makes getting free water out far easier too.

 

[Tinbasherdan]

I personally wouldn’t go for an alu workboat given the amount of them I’ve seen our old fella crane out for repairs to cracks, over and over.

 

[Brad93]

I personally wouldn’t go for an alu workboat given the amount of them I’ve seen our old fella crane out for repairs to cracks, over and over.

Well that’s handy because I can weld it haha.

In all seriousness we don’t do anything like what Bob does and the boat will need to come out of the water after every use. I think some tubular runners down each side, some big wheels on the back like a BIC boat, and she will last years. Like I say the biggest lake is 8 acres, the rest around 3 acres.

 

[Tinbasherdan]

Well that’s handy because I can weld it haha.

In all seriousness we don’t do anything like what Bob does and the boat will need to come out of the water after every use. I think some tubular runners down each side, some big wheels on the back like a BIC boat, and she will last years. Like I say the biggest lake is 8 acres, the rest around 3 acres.

I genuinely think a grp boat is the best for what you’re doing

 

[Brad93]

I genuinely think a grp boat is the best for what you’re doing

Unfortunately they have a GRP boat and it isn’t man enough. And it’s sprang quite a few leaks.
It gets dragged in and out of the water, and then stored outside.

 

[Tinbasherdan]

Unfortunately they have a GRP boat and it isn’t man enough. And it’s sprang quite a few leaks.
It gets dragged in and out of the water, and then stored outside.

Then teach them how to look after gear instead of spunking money on making allowances.

 

[addjunkie]

You can actually buy like a fat wheel designed to be fitted to the stern of small boats to make pulling up the beach easy.

 

[Armin]

Hello look at http://www.arynboats.nl I bought a hull and did the expansion myself. 2m wide, 5.40m long

 

[fizzy]

A mate of mine had something similar to a RIB but built out of aluminium - even the tubes. Not very pretty but went well.
What I thought was a brilliant idea. The tubes and the ballast chambers were filled with plastic pop bottles apparently.