FOR NEW POSSIBLE USERS

[PEP FERNANDEZ]

In my last job I used MAXSURF and RHINO.
We started , normally, making a measurement of the hull of yachts in yards with total stations.
We imported the (.txt) markers file direct to rhino or maxsurf.
From this, it is very easy and fast optain surfaces, to define a hullform, to work with hydrostatics and many programs.

I am checking the free version of DELF. Obviously I can not do trials with IGE files.

I would like to request opinions about some topics from professional version with extensions users:
The compatibility of RHINO IGE files and DELFSHIP (specially to use a personal design library of new designs and existing designs and boats).
Other important question is about the ISO stability criteria for yachts.
Also, I would like to know if is it possible (easy and fast) create in the professional version a hull from a numerical offset file.
How much surfaces to start and add are there in the professional versions (In the free version only a box and cilinder)?

[PEP FERNANDEZ]

Other questions:
In professional version is it possible move at the same time a group of selected points (or only one by one like in the free version)?
Is MSC.267(85) used?
In loadcases, is it possible add extra solid masses items in the deadweight list?

Thanks.

[MICHAEL KERR]

Hi permarblau,
I’ll try my best to answer your questions, forgive me if all I do is muddy the waters for you.
Your first question I’ll leave to others, regarding markers as well as numerical offset files (don’t use them myself as I work directly from Delft). But I have imported IGS files from Rhino, drawings of hatches, winches, pedestals and wheels, but it was a long time ago and I had mixed success but that was proberly due to my inexperience at the time.
ISO criteria, Delftship is first and fore most dedicated to merchant shipping, us yacht designers have to take second place so the basic criteria is for cargo ships and passenger ships of 24m on length or over. But as I have just found out (last week) that you can set the Criteria to any standard you like, its designed to be flexible, if your interested in yachts, this one will interest you, you can alter the wind pressure (any pressure you like) if you have Load Cases module and see what the heel angle of your yacht is under steady or gust conditions, depending how much sail you have up.
Surfaces, I’m trying to think of what other surfaces you would want, from a box delete 3 sides and you have a sail, from a cylinder you can make winches, if there is something special that you require and if Marven thinks it has an application in merchant shipping he will do his best to include it but remember Delftship is solely run by one person, unless the staffing arrangements have altered.
If you want to move multiply points at once, highlight the points you want to move and add an @ at the very front of (XYZ) the distance you want to move in the coordinate box, if it’s a minus number the @ still had to be at the front eg @-1.999 or @1.999 .
To my knowledge there are no restrictions in how many items you can add in loadcases but I better leave this one up to others to answer.
I will add one other thing that might interest you, I use Delft hull modeller, Tanks and Loadcases and I do my interiors and detail drawing in Rhino. Although the tank module is over-kill considering I only design small yachts but I love it.
Why you may ask or ask not, I can create a tank in the keel which has the exact shape as the keel sides and fill it full of lead or and other material you like, and if you know someone in the Russian mafia you can fill it full of spent plutonium and you can add that one into Loadcases and call it the Comrade Stability Criteria.

Dasvidania permarblau

[Jesus Cruz]

Regarding the IMO MSC 267 (85), yes this stability criteria is included in the library, are also included ABS stability criteria for towing vessels, and Bureau Veritas Stability criteria for towing vessels aldo.

Regarding moving a number of points, you can select all the points that you want to move and move manually in the same way that you would move just one at the time.

Regarding IGES, Marve recently included a feature that will extract markers from an IGES file, giving very good results, it can import markesr from IGES and TXT files giving you a very good tool to import hull shapes.

I have been using DELFT ship the last 4 years and I´m very happy with the results.

I also had the chance to try the Rhino Orca combination for stability and I found more complicated to work with Rhino and Orca.

Hope this helps

Regards

[PEP FERNANDEZ]

Thanks for your comments. Many thanks.

I am going to start working like a freelance. Naturally, I must buy naval architecture software, and I am testing and considering different options and possibilities.

Because of this, I am checking carefully the free version of DELFT, and I have many questions.

One by one is possible using the mouse (free move), move a point.
For few points, really, I have checked that it is possible to move some points at the same time. But for few points, in the free version I have only discovered numerical move (Select some points; and use the option move from the menu transform (but I only found that it is possible numerically for few points, not free movement with the mouse (Maybe I did something wrong)).

I use many times RHINO. I checked that it is possible in the free version import VMRL from a VMRL of RHINO. Really, it looks a beginning to import a hull to study loadcases and stability. But it is not an option to import surfaces and nurbs for work in DELFT.

Export to RHINO from the free version it is possible using STL files. It is not NURBS, but it could be a begining.

Regarding the IGES topic, I am very interested in opinions of professional version users. I have a hulls library with IGE files of existing vessels and yachts, originally made by other programs. Obviously, for me it is very important the way to import these automatically and start to use.

IGES export, Mike indicated that it is working good.

Another particularity for me very important is catamarans. I am interested in opinions of professional users on these.

Finally, for me, to be a good program it is very important the way to start working with existing vessels (for example for me it is now the top: http://www.youtube.com/watch?v=2KPHcf4_VFg ).

Regards.

[MICHAEL KERR]

One by one is possible using the mouse (free move), move a point.
(YES but not in Perspective.)

IGES export, Mike indicated that it is working good.
(That was about 3 or4 years ago, I cant remember if it was IGES or STL but those files definitely come from Rhino, and there have been so many updates since then.)

Another particularity for me very important is catamarans.
(Yep you can make cat hulls, Delft will mirror your hulls.)

Regarding your last bit, the best person to ask is

(MARVEN ARE YOU THERE CHECK OUT THE VID THAT permarblau BOUGHT WITH HIM
ITS YOUR MATE ANDREW AND HIS MAXSURF

It’s the only way I can get Marven’s attention, he is so conscientious, we keep him locked up in a basement coding away and throw him a piece of raw meat every now and then.)

[PEP FERNANDEZ]

Another important point, it is the price.
I requested prices using the contact window of the DELFT web.
I am waiting for a quotation or price list from DELFTmarine.

In the main time,I continue playing with free version and study carrefully the extensions information.

Do you know if are there demo videos or tutorial videos of DELFT (or made by one professional user with extensions) in youtube or another videoweb platform?

Thanks for your comments. Many thanks.

Regards.

[Jesus Cruz]

If you want to, you can send me the IGES file that you want and i will importe it to DELFTship and send you the file so you can see the result obtained by importing IGES files. This way you can see what can you get with the pro version of DELFT ship.

I´m also a freelance Naval Architec in Mexico, and i have get very good results with DELFTship

My mail is cruzmayora@hotmail.com

Best Regards

[Jesus Cruz]

Another thing is that you can import markers from GF´s files, that has help me a lot too.

Regards

[otaku]

Just yesterday, I found by chance/accident that I can select a surface or more than one, and “Translate/Move” them. I had a superstructure I wanted to shift forward about 3 meters. On an off chance, i decided to select the port side’s panels (meshes) and moved them. I found that everything worked as I hoped. So, I did the starboard side, too. It really, REALLY helps me to color-code the meshes.

This might violate the intended use of the app and the approach in the professional office, but do not like seeing the hull curvature moving fore and aft when I turn the colors on for the net. I want those lines snugged and contour-following my stations. I use this effect so that I can estimate weight of each sideshell between watertight bulkheads. As I add mass to the sections of the ship, I can calculate or at least collect the data, even though I will not personally know how to calculate bending moments, and so forth. But, at least I can say that along the length of the hull, in this and this and that compartment, the inertia downward is this much. If I am told that my understructure is not sufficient for the mass per square meter, I can then move the mass around within constraints of my design of a compartment, or I can keep it and bolster the underdeck stiffeners and girders.

But, back to color coding. I color the meshes so that I can more rapidly see what lines and curves and surfaces are really background and not part of my moment’s activity. I wish there was a way to hide and unhide objects without going into the Layer interface. I wish that Layers and Reports would not prevent editing the model and that they would provide real-time updates as points are pushed to and fro. It would be great because then I could more quickly determine whether or not my edits improve or worsen the resistance.

[otaku]

Documentation/Tutorial:

http://www.delftship.net/delftship/index.php?option=com_docman&task=cat_view&gid=16&Itemid=7

These are quick and simple.

[Author]

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