How does this look?

[alanrockwood]

I have been playing with Free!Ship plus to design a hull. This is just an intellectual/educational exercise. The project is a hull roughly inspired by Dutch barges, especially the Klipper style, but the hull make no pretense at being a replica or even a faithful representation of the the type. It is just my fanciful playing around.

All the disclaimers taken care of, what do you think of it? I am posting a simplified lines plan, i.e. without most of the intersections, and a perspective view. The bottom panels of the boat are in a different color from the sides.

[Adler]

Dear,

Send please the Stability Data (Diagram) to see the performance of your design.

[alanrockwood]

Originally Posted by Adler

Dear,

Send please the Stability Data (Diagram) to see the performance of your design.

I am still trying to figure out how to generate a stability diagram. I will post a stability diagram when I figure out how to generate it.

However, at this point the model is just a hulk, i.e. no ballast, frame, engine, deck, superstructure, or furnishings, so I am not sure how informative the stability diagram would be at this point.

[Adler]

I would like to see the Concept of your design.
What is then main purpose for this Hull to be used?
Will be used as Motor Yacht or Sailing Yacht or Passenger or Merchant?
Which are the dimensions?
What is the Hull material?
What will be her navigation Area or the desire range?
Will be coastal or medium range or ocean going?

[alanrockwood]

Originally Posted by Adler

I would like to see the Concept of your design.
What is then main purpose for this Hull to be used?
Will be used as Motor Yacht or Sailing Yacht or Passenger or Merchant?
Which are the dimensions?
What is the Hull material?
What will be her navigation Area or the desire range?
Will be coastal or medium range or ocean going?

Purpose: pleasure cruising canals of Europe, especially France. Possibly limited offshore use, e.g. crossing the English Channel during calm conditions. Would be fitted out for extended live aboard periods (weeks at a time).

Propulsion: diesel engine

Range: undecided

Dimensions: 20 meter X 4.13 meter

Draft: 1 meter

Airdraft: 3 meter (hull only)

Freeboard: 2 meter

Displacement: 31 metric ton (assuming 1 meter draft)

Hull material: steel

[Adler]

Please check to modify:

Beam: 5.25m
Draught: 1.40m stern
0.90m bow
Freeboard: 2.2m

[alanrockwood]

Originally Posted by alanrockwood

Purpose: pleasure cruising canals of Europe, especially France. Possibly limited offshore use, e.g. crossing the English Channel during calm conditions. Would be fitted out for extended live aboard periods (weeks at a time).

Propulsion: diesel engine

Range: undecided

Dimensions: 20 meter X 4.13 meter

Draft: 1 meter

Airdraft: 3 meter (hull only)

Freeboard: 2 meter

Displacement: 31 metric ton (assuming 1 meter draft)

Hull material: steel

Oops, correction to the figures above. Freeboard was 1 meter and airdraft (hull only) was 2 meter. I made the mistake at first of measuring freeboard and airdraft from the bottom of the hull instead of from the waterline.

[Adler]

Dear,

Please check the draught should be less than 1.7m regarding to use the hull in canals. This value is excluding keel height. Also you have to increase the mean freeboard value more than 1.5m and the beam more than 5.1m. The last should be useful to gain good seakeeping to British Canal even the weather comes to astern. Another advantage should be the ability to install two Engines in a large beam engine room and two propellers far enough from the centerline. The hull's depth (height from Deck to Keel) should be much enough to reduce the Superstructure volume and to keep a low profile to the wind pressure - very important to manoeuvrability for hybrid boats for rough seas and river canals.

[EuroCanal]

Originally Posted by Adler

... and the beam more than 5.1m. The last should be useful to gain good seakeeping to British Canal even the weather comes to astern.

Another advantage should be the ability to install two Engines ...

The maximum width on most French canals is 5m. A 5m canal boat like this would be OK to cross the channel in calm conditions. There was one recently that went around the UK coast, across to Ireland and on up to Scotland.

A single engine is more common on the canals for this size boat. You need so little power underway at slow speed that a single engine is more efficient, and the extra prop is just added drag. Two props at the edges will be more exposed. Canal canal sides are shallower and often lined with large stones to reduce erosion, and other debris - you don't want a prop near that.