This is are the dimensions of my tanker:
Parámetro
Valor
L
89.38 m
Lpp
84.83 m
B
15 m
D
8.3m
T
5.8 m
LBD
m^3
Lpp/D
11.54
B/D
1.87
T/D
0.65
Fn
0.17
L/B
5.96
L/D
11.13
With a block coefficient = 0.8 and a displacement of 6403 tons.
When estimating the shapes in Maxsurf modeler, the base ship "cargo ships" is taken, which is given with initial length and draft.
Through parametric transformations, it is intended to obtain the previous measures and to achieve the displacement.
When it comes to achieving what is stipulated above, it is impossible to achieve a block coefficient similar to the one calculated theoretically.
I am not sure but I think that the shape of the cargo vessel of Maxsurf is not adequate for an oil tanker with these characteristics.
These are the characteristics of the initial ship:
These are the ones that are achieved by trying to adapt the ship to my dimensions:
As can be seen, the block coefficient is not similar to that of a normal oil tanker.
What I would like to know is that if there is any way to adapt the cargo vessel of Maxsurf examples to the characteristic of my tanker ( I mean dimensions, displacement, and block coefficient).
If the previous one is not possible. Is there any Maxsurf example for a tanker? I mean a file from Modeler of a tanker in which I can apply a parametric transformation to obtain my tanker.
Thanks,
María
Hi Maria,
Parametric transformation is a great tool, but it is limited to small - medium changes. Like small changes in block coefficient.
You are trying to entirely resize your ship to new dimensions. That is beyond what you could expect from parametric transformation.
I would split this into two processes:
- Use Surfaces | Size Surfaces to get the overall dimensions of your new vessel correct.
- Then use Parametric Transformation to alter the target displacement of coefficients.
Note that after resizing, you will need to redo Data | Frame of Reference to put the AP, FP etc in their new correct positions.
Also - I would use the Parallel Midbody settings for a vessel like this. That will ensure that MAXSURF makes the changes to the bow and stern regions without trying to reshape the midbody.
Regarding samples, take a look in C:\Program Files\Bentley\Offshore\MAXSURF CONNECT Edition V23\Sample Designs
Let me know how you go.
Regards,
James