Boat 560 boat plan

Total lenght: 5589,24(mm)
- Beam: 2272 (mm)
- Thickness of the side/bottom:4/4 (mm)
- The waight of the boat without engine:750 (kg)
- Transom height:635 (mm)
- Deadrise at transom:19 (degree)
- Fuel tank:115 (liters)
- Max hull load:450/5 people
- Engine : 150 (HP)
-Utilization aluminium sheets:85%
5 sheets 6000x2000x4 (mm)
1 sheet 6000x20000x3 (mm)
1 sheet 2000x1000x3 (mm)
1 sheet 1800x2000x4 (mm) diamond

 

Questions:
- How can you measure the 0.24 mm length?
- Greater thickness on the side than on the bottom?
- Displacement at full load, around 1450 kg. Isn't that too much for such a small aluminum boat?

 

I will ask again - are you building these boats in Tuzla, or just selling the plans, or.......?
If yes, what are the costs of the plans, or the completed boats, re the designs that you have posted on the forum so far?

Tansl spotted an error re the side and bottom plating thickness, so you then simply edited your post without any acknowledgement to Tansl - and without answering his question re the full load displacement.

 

Hello Bojan. Where are you from? If you from serbia we can wrtite that language. I selling projects, and i did projects for many companys from EU and world. I made mistke in write. This boat i worked for man from Poland, and if i remeber he use it for Baltic sea, and he need waight on the boat, becouse that we did 4mm thicken . Minimum for this ,if ask me is do combination 3 and 4 mm thicken. 3 mm you can do console , cockpit and inside construction like ribs, but again i write he need waight. He dont want fly.I have video this boat on the sea and look very good. Different peoples make project on the different way.I worked projects here in Bosnia,and here produce small projects like jon boats.

 

I want to know how you changed the thread title.
Or did the Moderator do that for you?

You can use a translator to help with the English and communicate more effectively.

Bajansailor is from Barbados.
His location is in his header, top right of each of his posts, like everybody else, including you, from Tuzla.

You've got so many similar threads.
Bajan had responded on one of your other threads with his questions he refers to above. I will copy/paste it here for clarity:

"Are you building these boats in Tuzla?
If yes, what are the costs of completed boats, re the designs that you have posted on the forum so far?"

 

you really need to post the sections. profiles do not tell much. thank you

 

Not really. Compare with Donzi 18. The Donzi did have a skosh more deadrise at around 20 degrees.

 

Could you explain what all that has to do with the fact that the hull seems—I repeat, seems—too heavy, or that 90 kg per passenger is more than is normally considered, or that a very heavy 150 HP engine seems—I repeat, seems—more than necessary?
Comparing with other boats, as you do, can never be as accurate as having data from a similar project, as I do. Thanks anyway for your invaluable comment.

Edited: Spurred by curiosity, I searched for "Donzi 18" online and was shocked. Do you really think that boat has anything to do with the one in this thread? Amazing!!

 

It's the same size and carries 4-5 people and has a 20 degree deadrise at the transom. So yes, it comparable. It was a well received production boat that was as heavy as what is being proposed. The weight matches the deadrise and high power.

I don't know what more than necessary means in this context. You build to suite a customer or exploit a niche. The Donzi had 300 hp. I'm not saying you can't build a lighter boat, I'm just saying you can make a successful one that is heavy. Specifically, there is nothing wrong with going that way if you choose to.

 

Of course!! And who said otherwise? It's so obvious. But for some strange reason, designers tend to make their designs as lightweight as possible, within the limits set by the SOR.
Aside from all that, I would never compare a boat with an aluminum hull to one with a fiberglass hull. With the same dimensions, the weights are completely different. The weight distribution is also different in the case of the OP's boat and the "Donzi 18", but, of course, it's just one opinion, as valid as any other. However, I advise you not to start designing boats by comparing "such different" boats, no matter how similar the shapes may seem to you (which they also aren't comparable).
Oh, and it's not just about comparing dimensions; it's very important to distinguish what each boat is intended for and how it's being used. Imo.

 

every planing boat I ever built had a 6mm bottom 20 to 29 feet
deadrise midships 25 deadrise station two 43 none used on lakes or rivers