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Stena Teknik - Design A Ship's Hull Form with Minimum Resistance

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Thanks for looking into our challenge! STENA is always looking for ways to be more environmentally conscious, and one way to do that is to reduce emissions.

The challenge here is to be more sustainable by designing a ship’s hull form to be less resistant in the water, and thus reducing our consumption of energy and reducing our emissions to the atmosphere.

The goal of this challenge is to design a hull form with 16,000 tons of displacement.
What would be the hull design with the least resistance through the water?

Requirements

  • JUDGING CRITERIA

    1. Resistance through water
    2. Novelty of design
    3. Quality of calculations

  • SUBMISSION FILE FORMATS

    IGES Format
    Rendering files
    Speed - Resistance calculations & results
    Hull surface roughness assumption

  • TECHNICAL REQUIREMENTS

    Design speed 20 knots
    6.5 meter draft (harbour restrictions)
    Length over beam ration less than 8 (L / B < 8)
    Bare hull only - to be considered
    No propulsor/propeller to be included
    Surface ship (not submarine)
    16,000 tons of displacement

Rules

  • ENTERING THE COMPETITION

    The Challenge is open to everyone except employees and families of GrabCAD and the Sponsor. Multiple entries are welcome. Team entries are welcome.

    By entering the Challenge you:
    1. Accept the official GrabCAD Challenges Terms & Conditions.
    2. Agree to be bound by the decisions of the judges (Jury).
    3. Warrant that you are eligible to participate.
    4. Warrant that the submission is your original work.
    5. Warrant, to the best of your knowledge, your work is not, and has not been in production or otherwise previously published or exhibited.
    6. Warrant neither the work nor its use infringes the intellectual property rights (whether a patent, utility model, functional design right, aesthetic design right, trademark, copyright or any other intellectual property right) of any other person.
    7. Warrant participation shall not constitute employment, assignment or offer of employment or assignment.
    8. Are not entitled to any compensation or reimbursement for any costs.
    9. Agree the Sponsor and GrabCAD have the right to promote all entries.

    If you think an entry may infringe on existing copyrighted materials, please email challenges@grabcad.com.

  • SUBMITTING AN ENTRY

    Only entries uploaded to GrabCAD through the "Submit entry" button on this Challenge page will be considered an entry. Only public entries are eligible. We encourage teams to use GrabCAD Workbench for developing their entries. Entries are automatically given the tag "shiphullchallenge" when uploading to GrabCAD. Please do not edit or delete this tag. Only entries with valid tag will participate in the Challenge.

  • AWARDING THE WINNERS

    The sum of the Awards is the total gross amount of the reward. The awarded participant is solely liable for the payment of all taxes, duties and other similar measures if imposed on the reward pursuant to the legislation of the country of his/her residence, domicile, citizenship, workplace, or any other criterion of similar nature. Only 1 award per person. Prizes may not be transferred or exchanged. All winners will be contacted by the GrabCAD staff to get their contact information and any other information needed to get the prize to them. Payment of cash awards is made through PayPal. All team awards will be transferred to the member who entered the Challenge.

  • We will release the finalists before the announcement of the winners to give the Community an opportunity to share their favorites in the comments, discuss concerns, and allow time for any testing or analysis by the Jury. The Jury will take the feedback into consideration when picking the winners.

  • Winning designs will be chosen based on the Rules and Requirements.

  • This Challenge ends on February 8th, 2019 (17:00 EST.) Finalists will be announced February 15th, 2019, and winners will be announced February 22nd, 2019.

Prizes

$15,000 in Prizes!

1st Place:

$7500

2nd Place:

$5000

3rd Place:

$2500

About the jury?

Stena Teknik

About Stena

Stena believes that sustainable business is long-term business and is based on the group’s common values. The three main areas within the Stena Sphere are shipping, ferry operations, and offshore drilling. We offer first class transport and logistics for our customer’s needs. Our Ropax and Roro vessels are an important part of Europe’s trade, while our fleet of tankers carries oil, gasoline, gas and vegetable oils all over the World.
Stena has 21 ferry routes with some 35 vessels in Northern Europe and Stena Shipping operates some 100 tankers.

Stena Teknik is a common resource for all maritime-related business in the Stena Sphere and has the role of an expert function primarily in marine technology. Stena Teknik conducts cutting-edge research to meet future challenges and to increase competitiveness.

39 comments

  • Larry V

    Larry V about 1 month ago

    Can we submit a design with no calculations? :)

    Larry V has uploaded 7 CAD models & has left 5 comments.
  • Winston Jennings

    Winston Jennings about 1 month ago

    Are there any particular threshold values we should aim for?

    Winston Jennings has uploaded 278 CAD models & has left 867 comments.
  • Patrick Kittler

    Patrick Kittler about 1 month ago

    Sometimes organic/intuitive skills of genius level in design occur in folks who may not have access to the fluid dynamics software. I do not have this skill, but the sponsor of the competition should accept designs without full calculations which they can process if they spot obvious skill. A tiny tiny investment if they ever actually use the design. A great initiative. Thanks

    Patrick Kittler has uploaded 0 CAD models & has left 1 comments.
  • Kesa

    Kesa about 1 month ago

    Larry V the calculations are required for your submission. If you send in a model without it, the model most likely will not be considered.

    Kesa has uploaded 1 CAD models & has left 28 comments.
  • Ármin Fendrik

    Ármin Fendrik about 1 month ago

    Is the 6.5m draft maximum, minimum, or exact?

    Ármin Fendrik has uploaded 55 CAD models & has left 106 comments.
  • Marco QM

    Marco QM about 1 month ago

    Are there any specific measures to be considered? (width, length, how deep it's supposed to go...)
    Also, to those who do not have access to fluid dynamics software, I recommend Autodesk Flow Design, it's free and easy o use; will not give you any specifics as its not designed for boats but with the Cd and watching the airflow you'll get a good idea.

    Marco QM has uploaded 0 CAD models & has left 4 comments.
  • Nicolas Marc

    Nicolas Marc about 1 month ago

    - 16,000 tons is the total in charge?
    - Single hull or multi hull?
    - 16,000 tonnes, this represents about a boat about 150 metres long and more, but it will depend on its use; perhaps we have to respect the specific dimensions of certain types of equipment?
    - What type of transport?
    - Bow bulb studied and classified for use in ice?
    - Are you looking for a hull for a multi-purpose vessel?
    - Use for ocean travel only? with occasional coastal traffic?

    Nicolas Marc has uploaded 65 CAD models & has left 968 comments.
  • Per Wimby

    Per Wimby about 1 month ago

    6,5m max draft, single hull, RoRo cargo, no ice requirement and short international voyage.

    Per Wimby has uploaded 0 CAD models & has left 2 comments.
  • dima78

    dima78 about 1 month ago

    Создайте подводное крыло с возможностью прилипания (подхода) к килю судна при прохождении мелководных ( по осадке) русел для подхода к портам.

    dima78 has uploaded 11 CAD models & has left 22 comments.
  • Roger-Marie Couture

    Roger-Marie Couture about 1 month ago

    I can not wait to see that.

    Roger-Marie Couture has uploaded 133 CAD models & has left 700 comments.
  • Ananth Narayan

    Ananth Narayan about 1 month ago

    "The goal of this challenge is to design a hull form with 16,000 tons of displacement". I don't understand with term 16,000 tons displacement. Please clear my doubt anyone.

    Ananth Narayan has uploaded 49 CAD models & has left 185 comments.
  • Sava Savov

    Sava Savov about 1 month ago

    @Ananth That means that the mass of the ship is 16 000 tons when the ship is fully loaded and its underwater volume will be about 16000 m^3. With other words: 16 000 m^3 of water (which is 16000 tons water) are replaced with 16000 m^3 underwater volume of the ship and the mass of all ship (not just the underwater part) is 16000 tons too.

    Sava Savov has uploaded 16 CAD models & has left 28 comments.
  • Don Blankenship

    Don Blankenship about 1 month ago

    maybe they are looking for new or another employee.... hmm? why not test the international waters for new talent?

    Don Blankenship has uploaded 0 CAD models & has left 1 comments.
  • j t

    j t about 1 month ago

    Maybe they are looking for new calculation methods, besides it's not that hard to do some calculations.
    Either-way i'll wait a while before i submit my entries.

    j t has uploaded 4 CAD models & has left 4 comments.
  • Marco QM

    Marco QM about 1 month ago

    Probably just looking for ideas for the hull, to get a basic shape and then get a well-paid team to fully develop it...

    Marco QM has uploaded 0 CAD models & has left 4 comments.
  • Husein

    Husein about 1 month ago

    @Per Wimby Can you give us some rough dimensions of the hull instead draft and beam ratios. We are not all ship architects :)

    Husein has uploaded 13 CAD models & has left 23 comments.
  • Sumit Goski

    Sumit Goski about 1 month ago

    What is the light weight of the ship ?

    Sumit Goski has uploaded 0 CAD models & has left 3 comments.
  • Jamie

    Jamie about 1 month ago

    clarification - is the over displacement weight inclusive of the vessel displacement??

    Jamie has uploaded 1 CAD models & has left 14 comments.
  • Melville

    Melville about 1 month ago

    Can we design the ship for North-Atlantic Harsh wave patterns ?

    Melville has uploaded 13 CAD models & has left 6 comments.
  • Melville

    Melville about 1 month ago

    In any case the stiffness has to be optimized near mid stern portion to suit harsh wave patterns ? What about introduction of metal formed creases in this area

    Melville has uploaded 13 CAD models & has left 6 comments.
  • Sava Savov

    Sava Savov about 1 month ago

    @Jamie The easiest way to find out what's going on is: Imagine a picture - we have only water. Everything is in balance. Then imagine that you see a ship that floats in the water. Again everything is in balance. What do we find? We find that some water that was on the first picture is missing, and in its place there is the underwater part of the ship. So, we can conclude that the ship has replaced the missing water by volume - with its underwater part and that the ship has replaced the missing water by weight - with its own weight.

    Sava Savov has uploaded 16 CAD models & has left 28 comments.
  • Per Wimby

    Per Wimby 29 days ago

    North Atlantic is not an option; short international voyages, Total displacement (including deadweight and lightship) about 16.000 tonnes. Max LOA 200m

    Per Wimby has uploaded 0 CAD models & has left 2 comments.
  • Husein

    Husein 29 days ago

    Is the 6.5 meter draft (harbour restrictions) the vertical distance between the waterline and the bottom of the hull?

    Husein has uploaded 13 CAD models & has left 23 comments.
  • Guillaume Florent

    Guillaume Florent 28 days ago

    This is a question to Per Wimby, who is on the jury of this challenge and kindly added some comments to this page.
    Mr Wimby, I see some extra requirements in this comments thread from you: 200 LOA max, short voyages, single hull, RoRo.
    I guess these requirements from a jury member are 'officially' added to the technical requirements in the challenge presentation at the top of this page? 200 LOA max and single hull are pretty clear requirements/constraints. Yet, how would the fact that it is a RoRo for short trips translate into more measurable requirements in the context of resistance minimization?
    All the best.

    Guillaume Florent has uploaded 0 CAD models & has left 1 comments.
  • Nick Tracy

    Nick Tracy 21 days ago

    Ship Hull design has already pretty much hit a pinnacle when it comes to mono hull designs and cargo ships. You should try some other energy saving methods like optimizing the bulbous bow for the speeds and tonnage of the ship. Use air lubrication under the hull. Use a Hi-Fin on the prop. Use a hybrid system for power. Make use rotor sails... The list is extensive on new technology, The hull should be a multi hull for the absolute best design for energy conservation. Smaller footprint in the water and the least displacement means less drag coefficient.

    Nick Tracy has uploaded 0 CAD models & has left 8 comments.
  • Wãlîd MãrîñǾ-ḝl ßâzz

    Wãlîd MãrîñǾ-ḝl ßâzz 21 days ago

    Dear juror's
    This what we need,some challenges like this,its a good chance
    and opportunity for us to learn others stuff in this field,and discover our skills.
    Just a note,it was be great if you could add some specify value for the resistance,power,ship service,that can help us to work with a real criteria.
    thanks again

    Wãlîd MãrîñǾ-ḝl ßâzz has uploaded 1 CAD models & has left 16 comments.
  • Adem Ali Yılmaz

    Adem Ali Yılmaz 21 days ago

    @Per Wimby, Requirements are clear, but you wrote a comment max loa 200m? Is it a another Requirements or not? if yes you have to publish it on main Requirements. do I check comments regularly what if you wrote something?

    Adem Ali Yılmaz has uploaded 0 CAD models & has left 1 comments.
  • Dario D'Amico

    Dario D'Amico 19 days ago

    I would kindly ask to extend the deadline by a week or so, the calculations are taking more than expected, I'm not sure whether or not I'll be ready by the 8th.

    Dario D'Amico has uploaded 11 CAD models & has left 19 comments.
  • Winston Jennings

    Winston Jennings 19 days ago

    Winston Jennings has uploaded 278 CAD models & has left 867 comments.
  • Ashish Verma

    Ashish Verma 18 days ago

    Same here as @Dario D'Amico

    Ashish Verma has uploaded 29 CAD models & has left 15 comments.
  • Winston Jennings

    Winston Jennings 17 days ago

    Winston Jennings has uploaded 278 CAD models & has left 867 comments.
  • Kesa

    Kesa 15 days ago

    Hello GrabCAD Community,
    Stena the sponsors of this Challenge have requested that we extend this Challenge to the 25th! So you have even more time to create high quality models and renders. Good luck to all participants.

    Best,
    Kesa
    GrabCAD Community Manager

    Kesa has uploaded 1 CAD models & has left 28 comments.
  • Pedro Henrique

    Pedro Henrique 15 days ago

    Kesa, would know when Finalists and winners will be announced?

    Pedro Henrique has uploaded 1 CAD models & has left 3 comments.
  • Laszlo Doro

    Laszlo Doro 15 days ago

    Great! I have just came to notice that this is going on.

    Laszlo Doro has uploaded 7 CAD models & has left 19 comments.
  • Germano Pecoraro

    Germano Pecoraro 15 days ago

    Dears Stena Line Company,
    I am a little worried about some projects presented in the last days.
    Some projects besides the study of the hull, have also uploaded an idea of bodywork of the superstructures.
    I wonder: is not that then who presented only the hull analysis then will be penalized in the final competition?
    In other words "you did not draw the deckhouse, so you're out"!
    What should be done!?

    Best Regards
    Germano Pecoraro - Italy

    Germano Pecoraro has uploaded 3 CAD models & has left 4 comments.
  • Syamsiprop

    Syamsiprop 14 days ago

    is deadline extended?

    Syamsiprop has uploaded 51 CAD models & has left 8 comments.
  • Matt Firmani

    Matt Firmani 13 days ago

    Hey everyone! Stena Teknik has asked us to extend the challenge until February 25th, so we will be accepting new submissions until that time. It also gives everyone who has already submitted a design the chance to review their work. If you have any questions, just let us know!

    Matt Firmani has uploaded 1 CAD models & has left 26 comments.
  • Wellington Pires

    Wellington Pires 10 days ago

    Dear Stena Line team,
    All submissions will be evaluated together, as soon as the deadline is over, or the team is already fully checking the submissions already uploaded?
    Regards,
    Wellington

    Wellington Pires has uploaded 0 CAD models & has left 1 comments.
  • Pedro Henrique

    Pedro Henrique about 12 hours ago

    Dear Judges,
    As is not stated if the comments were alredy evalueted being evalueted or not, I am kindly asking to have my model revisited, due to recent updates.

    https://grabcad.com/library/dominant-roro-stena-teknik-ship-hull-challenge-

    Regards.

    Pedro Henrique has uploaded 1 CAD models & has left 3 comments.
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