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/

Hi everyone!

We are currently experimenting with a grasshopper app that calculates the equilibrium of a loaded vessel.

For now, we use TPC and MTC in order to get an initial result and then do some iterations in order to achieve the wanted LCB and displacement of the hull. However, I feel that a quicker way should exist.

Does anyone have any ideas that they would like to share? It would help a lot.

Thanks!

Hi guys, I'm hoping you can help me a lot. I am a senior in high school and want to become a naval architect. It has been a passion of mine since little. I am a little stuck since I'm not sure what to do. I want to apply to SUNY Maritime as im local to NY and its a school I love. I never took any advanced math class in highschool. I do understand I need a strong math level to pursue this career.

Should I go to community college for Algebra and calculus or trigonometry before I apply to maritime school. I have average understanding of math but understand I need to get better to pursue this career easier. Please help. Any help appreciated as I'm panicking 24/7.

I’ve been working in a design house for a little over a year, primarily focused on stability analysis, generating loading conditions, and preparing preliminary stability reports.

One of the main challenges I’ve encountered is that during the early design stages, frequent changes to the hull, tank, or compartment designs require me to constantly rerun several files such as HS, CC, Tank Capacity, and MaxFSM, followed by re-running all loading conditions (often more than 10).

In addition to using GHS, I spend a lot of time in Excel creating summary tables for the loading conditions, updating tank capacities, and MaxFSM values. This involves either manually typing the data or using Excel’s “text to column” function—both of which are repetitive and time-consuming.

To summarize, one change in any part of the process leads to a cascade of updates across multiple files, resulting in many man-hours of repetitive tasks. This has been the established practice in the company, but I can’t help feeling that it’s highly inefficient. And this is before even getting into the complexities of damage stability.

I’m curious—does this workflow sound familiar to others working in stability analysis at different design houses? Are these kinds of manual, repetitive tasks common across the industry?

While I recognize the power and cost-effectiveness of GHS, I’m wondering if there are practical methods or tools—whether through better use of Excel, automation scripts, or other software—that can help streamline the workflow and reduce the time spent on manual updates.

Any advice or insight into how to improve this process would be greatly appreciated!

https://preview.redd.it/hvhzbrk6i7qd1.jpg?width=1280&format=pjpg&auto=webp&s=71f858e80e429586d148389fce19c0b1e6c81c23

Good day,

I am currently designing an NPL hull form for my study, using CFD to get drag. I am using maxsurf to make it, by reverse engineering a hull drawing (that's going to be used for validation) and making it as a background so I could use it to put marks on stations. I used "make curves out of marks" to produce the curves and then headed to skin the curves to produce the surface. However, the hull model that resulted gave a very rough surface on the hull sides which make it have a weird negative volume in Ansys regardless of the mesh size. My concern is that I'm pretty sure I did all the right steps in order to generate the surface and I'm pretty sure I followed the background drawing pretty well to make the marks. So, is there anyway I can generate and render a smoother surface(only green color will show in the picture) ? Can I do it in Maxsurf itself or can I do it in Autodesk Inventor by exporting the marks only?

Would really appreciate the reply as I don't know any Naval Architect I could ask to.

I'm curious if anyone here is interested in providing consulting/design services for a project I'm working on.

100' steel sailing vessel that I hope to get inspected to USCG T- boat regs. In addition to the drawings required for the COI, I am interested in redesigning the interior layout and perhaps some other limited modifications.

I'd like to find a NA to act as consultant/designer, ideally someone familiar with the industry and process, who can also provide consulting/advice.

I've never worked with a NA before, so I'm also curious to know more about what to look for in a firm/designer to ensure quality work, a good fit and working relationship. Also, what are going rates for this kind of work?

How can NA students prepare themselves for a career in Robotics field? Do they have any advantage in Underwater Robotics field? Will they need a master's or PhD in Robotics?

I am a Naval architecture students at 2nd year at undergrad.. Our teacher gave us a assignment of scantling calculation, but they didn’t teach or helpmucjh in class. And I am at a lost what to do and how to do. If someone can give me a short guideline personally on video call I would be grateful. And at least provide me rulebook or tutorial video.

Hey everyone

Just after some advice on my best path to go go in regards to learning to design boats. I'm a qualified aluminum boat builder by trade, and would like to expand into the designing of my own vessels - mainly mono-hulls in the 4-8m trailer'd range. I have been working with Rhino for a number of years now, and have more recently been learning Orca 3D aswell as Maxsurf modeler.

I'm at the stage in my life now where a marine architecture degree/uni is out of the question for now. Ive looked into the MacNaughton Yacht Design school, as well as the course offered by Westlawn. Its hard to find any recent feedback on each of these, and they both could even be overkill for all I'm after.
Ive figured I need to learn stabilty/hydrostatics, resistance/powering, and structural/scantling at a minimun, so am looking at doing some shorter courses which target these particular areas.

There is a couple of courses offered by Navalapp and Udemy

Stability - https://navalapp.com/courses/stability-evaluation-with-iso-12217/

Structural deign/scantling - https://navalapp.com/courses/structural-design-and-scantling-with-iso-12215/

Maxsurf - https://www.udemy.com/course/maxsurfeducationenglish/

CFD - https://navalapp.com/courses/cfd-for-yachts/

In peoples opinion, would these few courses, (aswell as my fabrication background) be enough to comfortably be able to design aluminum boats? Any other recommendations? Again I'm only looking to design trailer-able mono-hulls, so nothing over the top or groundbreaking. I'd just like to be able to get a handle on how a boat is going to perform, before its too far down the build process.

Any feedback would be greatly appreciated :)

Note: Please be sure to not only rate, but also review the book, with as much detail as possible (likes, dislikes, insights, mistakes, relevance, other related books, etc.).

I've scoured the internet to create an extensive list of the most popular boatbuilding books, only to discover that many of them are barely or not reviewed on goodreads.com. Also, many of the books were published by International Marine, which McGraw-Hill closed down (see link below), meaning more information could help make these books more accessible.

sailnet.com/threads/international-marine-publishing-is-going-away.179858

• How to Build a Wooden Boat by McIntosh & Manning
• Principles of Yacht Design by Larsson, Eliasson & Orych
• The Elements of Boat Strength by Dave Gerr
• The Nature of Boats by Dave Gerr
• Boat Mechanical Systems Handbook by Dave Gerr
• The Propeller Handbook by Dave Gerr
• Building Small Boats by Greg Rössel
• The Boat Builders Apprentice by Greg Rössel
• Boat Construction (West System) by Gougeon Brothers
• Boatbuilding Manual by Robert M. Steward
• Boatbuilding by Howard I. Chapelle
• American Small Sailing Craft by Howard I. Chapelle
• Yacht Designing and Planning by Howard I. Chapelle
• Instant Boatbuilding by Harold H. "Dynamite" Payson
• Build the Instant Catboat by Harold H. "Dynamite" Payson
• Go Build Your Own Boat by Harold H. "Dynamite" Payson
• The New Cold-Molded Boatbuilding by Reuel B. Parker
• The Sharpie (Boat) Book by Reuel B. Parker
• Building Classic Small Craft by John Gardner
• The Dory Book by Gardner & Manning
• Boatbuilding with Plywood by Glen L. Witt
• Boatbuilders Notebook by Glen L. Witt
• Epoxy Basics by Russell Brown
• Building Strip-Planked Boats by Nick Schade
• How to Build Glued-Lapstrake Wooden Boats by Brooks & Hill
• Boatowner’s Mechanical and Electrical Manual by Nigel Calder
• Lofting by Allan H. Vaitses
• Elements of Yacht Design by Norman L. Skene
• Clinker Plywood Boatbuilding Manual by Iain Oughtred
• Details of Classic Boat Hull Construction by Larry Pardey

I searched virtually everywhere for a derivation or even how to use this rule as shown by my professor in his lecture. But only one site I could find some explanation about this but couldn't understand it. Please suggest me some resources to learn about this. Or please explain by giving an example. You can upload an image of problem and solution and derivation as wiritng text may be hard .

Thanks in advance.

Looking for one or multiple recognized (IACS or any Flag) simplified stability assessments for fishing vessels <15GRT. Transport Canada is not accepting ISO 12217 for fishing vessels. Practical test preferred (without the use of stability software or an inclining test). Any recommendations or suggestions? TC has cracked the whip on small vessel stability but refuses to provide any guidance on an acceptable regulation to use.

Hi is there a website where I can find Midships plan of an ASD Tugboat?

I’m a 27m with a Bachelors and Certificate in Music Performance. I’ve been successful as a professional musician but I’m finding myself unfulfilled and potentially seeking a significant career change. Returning to school is an option, and I am seriously considering Naval Architecture as a career. Is this feasible at this point, or is it too late?

I am getting confused with the definition of forward perpendicular being the intersection of load line and for side of stem. While I read steam is the forward part of bow. So shouldn't the stem be the outermost part? Like the bulbous bow? Please help me clarify.

Thanks in advance