When reading a shell expansion drawing, how can you tell if a ship has 1 or 2 rudders? Example 1: https://imgur.com/a/6141PAh

Example 2:https://imgur.com/a/SDn32VF

I am an aerospace engineer born very far from the sea, who now lives very close to one. I do not wish to pivot into naval architecture, but I would really like to find a nice book, which would explain to me the main ideas in ship design. I enjoy being around ships a lot and I would simply like to understand the basics as a hobby. Maybe, I would like to design and build a properly engineered model ship at one point.

I was hoping that someone would recommend me an intro level book on naval architecture, which is engaging to read, involves a lot of real ship examples, but also doesn't shy away from properly explaining the relevant principles. If such book doesn't exist in this field, I would be curious about the next best thing.

Thank you in advance!

I am new with NAPA/NAPA designer. Previously we used to have rhino, which made my life really easy to export from IGS file to GF file by using AttachGHSData command.

I would like to know if there is a similar command in NAPA/NAPA Designer to export all the frame section lines to a dxf format.

I have tried in NAPA designer, but so far i am only able to do it one frame at a time.

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Just wondering if it is possible to get outsource works from other country? How this works if it is possible?

Thank you! 🥰

So I am in final year of my undergraduate in Naval Architecture. I wanted to design Yachts. Our course had us design basic ships like containership, Oil tankers and Cargo Vessels. But we never learned how to build passenger vessels , Cruises or yachts. If i out of interests wanted to design them ( also may explore the career path of yacht design) where shall I start? ( would be helpful if some references are provided)

Hi.

Does anyone know how to properly use and read the Chart for Taylor's Frictional Resistance per Tons of Displacement? I have all the required ratios (i.e. Length Displacement Coefficient, Speed-Length Coefficient, Length Correction Factor) but I can't seem to properly determine and I am unsure of the right coefficient to use that could be placed into Table VIII and/or Table XXXVII for the determination of the EHP of a vessel.

Thank you for those who'll reply.

Has anyone here studied through the EU EMShip dual master's program? I'm hoping to ask a few questions, if anyone is willing to answer. Thanks!

https://preview.redd.it/2ey18acno02e1.png?width=1287&format=png&auto=webp&s=91722f11dbe197360312d567b68445eacf4eb1a8

https://preview.redd.it/ugsuqwjyo02e1.png?width=493&format=png&auto=webp&s=604233a94eae70503415dfb353fc45af4beb1f8d

https://preview.redd.it/3uiohcry012e1.png?width=633&format=png&auto=webp&s=80009f0d18d26d85c0dbaab89ba47ee7e7b2957c

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Hello everyone. I'm naval architect student from the Philippines. I'm start doing my scantlings calculations for my thesis. Can someone explain to me what is the interpretation of the "z" in the formula?

Thank you

Mainly what construction styles are each better at or allow you to use?

I have this idea to build and sail a 40ft catamaran to Antartica.
The catamaran will be obviously aluminium.
The catamaran will be as fast as possible (performace oriented) which means narrow hulls and related stuff....
The catamaran will have low center of gravity meansing, no center deck cabin.
What do you think??

I'm a student in the Pacific Northwest currently in community college and a few months ago I became interested in the field of naval architecture. I have been struggling to find information on what the day to day work is like as well as what is desired in terms of education.

I'm interested in having a conversation with one or more architects to see if it is a field that I want to pursue more or if there is alternate sub fields that may be interesting.

If anyone is interested in helping me, please reach out.

If there are people want to help but would rather not chat, I'm also looking for good resources on information about the naval architecture and recommendations for education.

Title says it all

I was talkign about building a boat in a game with someone, and when I was talkign abotu the superstructure they asked me if I meant the guns, or the bridge - I told them that thesuperstructure doesn;t include the guns, but realised I have no idea why. Does nayone know?

I am currently doing a gold ball texture in a hull for research purposes to determine if it does affect the wake. I made this 3D model in rhino and want it to run in maxsurf imported it as a 3dm file but the limit of surfaces has reached since this 3D model has many surfaces. ANy suggestion on what to do for it to be able to run in maxsurf?

Hey Reddit!

I’m Aaron Vinod John (currently 15 years old), and after a lot of work and thought, I’ve developed a concept that could finally address trimaran capsizing. It’s a simple, practical idea – but it’s also something I believe is quite genius! I won’t be posting my sketches here to keep the concept private, but if anyone’s seriously interested, I’d love to chat.

I’m currently looking to team up with a yacht designer to draft this plan professionally. I’m open to offering 5% of the sales (or we can negotiate). This is a chance to collaborate on something that could make waves in the sailing world!

If you’re interested or know someone who might be, please reach out:

• Email: svfounder@gmail.com
• Donate: lickda.com/pages/donate
• Instagram: instagram.com/sv_founder

Can someone guide me on doing tank calibration on a bulk carrier in Max Surf stability ?

Thnx

Ss

I am a Licensed Architect for buildings with 7 years experience in field. Now I am currently taking Naval Architecture Program. Does anyone had these decision? What made you decide?

so the thing is that i'm a ship mechanic but i want to learn how to create ships designe ect... maxsurf rheno

I have a hydrostatics assignment for the design of the ship given by analytical equations. However, through Simpson integration the results were that the ship had a Cb~=0.37 and was about 4600 tons. A little bit weird. Is it possible for a slender ship?

What is the highest engine power currently available for marine vessels, specifically in terms of kilowatts? I am interested in the details about manufacturers and types of engines if possible.

Anyone know the meaning of Q/L as the ship prefix? I tried searching on the web but found nothing.

This is probably a long shot but here it goes

Any structural engineers here who do strength calculations and similar? I find myself doing more of this and less of hydrodynamics as time moves on.

I would like to hear what programs you use for strength asessements of foundations and such. I mostly model in rhino and export to ansys, but would like input about possible other ship-programs.

Does anyone have theGA drawing of any ULCV that they could share? I'm working on a project related to container ship design and would appreciate any help.

Thanks!

My father worked on it and designed a system where they could keep track of all the changes going on, and I'd like to see if he's credited with working on it.

I’m working on my thesis about SWATH ships, and I could really use some models for validation. If anyone has access to any SWATH designs or knows where I might find some good data, especially any research towards resistance, i could really use it!

Hi folks. I'm wondering if anyone has any guidance, case studies, or suggestions for trying to model typical ice breaking capabilities of a ship, bow-on ice-breaking as well as astern ice-milling. From practical approach to suggestions on particular software packages. This has come about as I progress into 'traditional' CFD work. I recognize these are highly complex scenarios to begin with. Orca3d and Simerics don't have any related experience. Thanks in advance!

I'm reading Elements of Yacht Design by Norman Skene, and he uses a lot of terms I am unfamiliar with. Is there a dictionary or book, that covers architectural terminology for naval vessels?

Anyone else getting this error? I dunno if anyone has encountered this. I inserted a half cylinder but when I move it longitudinally, the surface seems to lag behind. This also happens to the default surface but when I delete the middle control points, it gets fixed.

https://preview.redd.it/erdc401muqsd1.png?width=207&format=png&auto=webp&s=cc7342f39cd0cea81eb89589df319695fac9d297

https://preview.redd.it/f8b5oobquqsd1.png?width=724&format=png&auto=webp&s=874d0e21234bee50dffc8392e8c6775d2fcb6e32

https://preview.redd.it/1r55ocluuqsd1.png?width=1302&format=png&auto=webp&s=9f1c0ae50c96c342ab32cb62b817aff7b4e54625

Hi, I'm hoping questions from a lay-person are okay. I'm planning out a digital painting I want to do, and wanted to get the details right if possible. I've been very interested in some of the modern sail-driven cargo vessels I've seen online, particularly the ones that aim to be primarily sail-based as opposed to augmenting traditional engines with bonus sails bolted on (I know this rules out a lot of the tested designs, and I do think those are cool, just not what I was planning for the next scene). So far most of the ships that remain, like the Grain de Sail II, the Anemos, or the SV Juren AE, seem to stow cargo more or less like sailing ships from a century ago, with longshoremen hauling stuff below decks, ideally on pallets, or they take bulk cargo. They have modernized hulls and a lot of automation and safety improvements, but it still seems like they have a lot in common with the sailing ships of old, or perhaps something like the Passat?

https://preview.redd.it/m4lzdwz54lsd1.png?width=5000&format=png&auto=webp&s=7c7c607ea11f2f9a29735d62c24345670d4f27db

I stumbled onto this design and I'm kind of fascinated by it since it claims to offer a primarily-sail-driven ship with containerized shipping, which could preserve some of the efficiencies and convenience of modern cargo systems. At the same time, I can't find much on their progress, or any pictures of the real thing, so I'm wondering how practical this is. I'll be the first to admit I don't know much about ships so if its some kind of venture capital grift I wouldn't know how to spot it.

It appears to have a lot in common with this design:

https://www.dykstra-na.nl/designs/wasp-ecoliner/

which looks even older and hasn't been made though I know changing big systemic practices (like building incredibly expensive things like ships) takes a long time.

I imagine the masts would pose a challenge for crane operators in port, though the second one claims to be able to use the masts for that. (I've read that roll-on roll-off ships are more popular for sail designs since it doesn't matter much for their cargo if the decks are cluttered up with masts and rigging). I'm also interested to see the bridge is in the front (I suspect so visibility isn't impacted by the sails?) I understand it's normally in the back on cargo ships to reduce the distance to steering and the engine rooms, so it isn't moved as much by rough seas, and because a rear location gives better visibility for the things that matter for sailing. I know there are plenty of other ships out there with the bridge near the prow I just don't have a great sense of when the designers choose each option.

So basically I'm wondering: is this a practical design and safe to use as a reference? If not, do you have any suggestions for a container cargo vessel primarily powered by sails? Or for sail-based cargo in general, really.

Huge thanks for any advice/suggestions you can provide!

I am simulating a ship in ANSYS Fluent, however I just wondered how should I deal with getting the results for the Trim angle and sink height in the report definitions? I did manage to see the Lift Force and Drag for the analysis but other than that I cant seem to see how to get the sink and trim? I really hope somebody answers this/