‘Resources’ Category


Largest Floating Crane on Planet Earth

Do yourself a favor and click through to the full-sized images. They. Are. Insane.

Meet Kaisho, a floating crane owned by IHI in Japan with a lifting capacity of 4,100 tons. Kaisho is the largest floating crane on the planet. Dry Roasted Blend covered Kaisho’s smaller sister, Yoshida, back in 2007, but Kaisho is even bigger, towering more than 450 feet over the sea.

In fact, the 2 cranes worked together, along with a third massive floating crane, on the Tokyo Bay Highway Project in Japan. Pictured below, from left to right, is Musashi, Yoshido, and Kaisho.

Kaisho, Yoshida floating cranesSource: ykanazawa1999

The helicopter really puts the sheer size of these behemoths into perspective.

Massive Floating Cranes

3 Floating Cranes

The three cranes were used to hoist 760-foot bridge spans weighing 7,400 tons for the Tokyo Bay Highway Project . In an incredibly complex engineering ballet, these three monsters moved inch-by-inch from barges carrying the bridge spans to the installation point. During the move, GPS was used to coordinate both the position and height of each bridge span as it was carried into position. Because each crane’s hooks had different rolling speeds, Kaisho had to radio lift positions to each of the two smaller cranes over and over again so they could keep the massive spans balanced until they were in position.

Floating cranes with a bridge truss

If you take a look at the original size of the image above on Flickr you can see tiny little people on top of the concrete pillars.

Japanese cranes Kaisho and Yoshida

Largest Japanese crane Kaisho

Massive crane lift

Huge cranes with Ship

I managed to track down a photo taken from that same restaurant ship pictured above as it passed by the Yoshida:

Floating cranesSource: Symphony Cruise

This was the first time in 15 years that 3 floating cranes were used in a simultaneous lift in Japan.

After a bridge span was in place, one of the massive floating cranes lifted a 450 ton crawler crane 200 feet above sea level and deposited it into the girders to work on the upper truss. If you click the photo below to see the larger version you can really get an idea of the scale of these cranes. Notice the yellow crawler crane that looks like a toy compared to the massive floaters.

Floating crane lifts crawler crane into girdersSource: ykanazawa1999

A shot of Kaisho all alone.

Massive floating craneSource: Tefutefu-Crane.com

Kaisho largest craneSource: Tefutefu-Crane.com

Lifting a crawler crane into the bridge girders:

Biggest floating crane - KaishoSource

A photographer named Gunnar Horpestad has some images in his gallery of Kiasho working on the Dalia build at DSME.

And if you’re technically-inclined, you can read more about the lift here (pdf).

For more information on Crane-Tec, visit our product pages on single and double girder cranes, runway systems, jib cranes, and all types of hoisting systems.

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Engineering Library: 39 Fantastic Free Resources for Students

Free Online Engineering Education

  1. MIT OpenCourseWare
    MIT offers a huge variety of free online course materials on various topics, engineering being one of them. They have sections for Aeronautics and Astronautics, Biological Engineering, Chemical Engineering, Civil and Environmental Engineering, Electrical Engineering and Computer Science, Engineering Systems Division, Materials Science and Engineering, Mechanical Engineering, and Nuclear Science and Engineering.
  2. TUDelft OpenCourseWare
    Collection of free online courses from the Delft University of Technology. Subjects include water management, microelectronics, offshore engineering, nanoscience, media and knowledge engineering, and many others.
  3. Biological and Irrigation Engineering
    Free online courses from Utah State University.
  4. Civil and Environmental Engineering
    Free online courses from Utah State University.
  5. Electrical and Computer Engineering
    Free online courses from Utah State University.
  6. UC Berkley Webcasts
    Free online webcasts of various courses from UC Berkely. These are actual UC Berkeley Courses recorded and posted as webcasts online shortly after they’re recorded, so you can actually follow along with current course offerings. They also have archived courses going back to the Fall 2001 semester.
  7. Carnegie Mellon Open Learning Initiative
    Free online courses from Carnegie Mellon University.
  8. NPTEL Free Online Courses
    A collection of free online course materials in both video and text formats published as a joint venture between the Indian Institutes of Technology & the Indian Institute of Science. Includes basic, civil, computer, electrical, electronics & communication, mechanical, ocean, biotechnology, mining, and metallurgy engineering courses.
  9. LearnersTV Videos
    Collection of engineering videos and recorded lectures.
  10. Engineering.com Textbook Library
    Engineering.com calls these textbooks, but they’re more like educational introductions to topics like thermodynamics, reliability, distribution, permutation and combination, common materials properties, gears, bearings, and a number of other topics. You can also find some useful “cheatsheets” like a Table of Integrals, Table of Derivatives, Laplace Transforms, Common Material Properties, Constants, and units. Overall it’s definitely a good resource.
  11. All About Circuits
    An totally free and incredible collection of online textbooks on electricity and electronics by Tony R. Kaphaldt. Includes 6 volumes: (1) DC, (2) AC, (3) Semiconductors, (4) Digital, (5) References, (6) Experiments as well as a discussion forum.
  12. Engineering Reference Tables
    Another one from Engineering.com, this is a collection of reference tables on various topics like Color Codes for Resistors, Washer Size Charts, Normal Shock Waves, Conversion Table, Periodic Table, and quite a few more.
  13. Engineering Case Studies
    Published by the Rose-Hulman Institute of Technology, Carleton University, and the American Society for Engineering Education
  14. Free Video Lectures
    An aggregator pulling together video lectures from a number of different universities on quite a few subjects into one, conveniently browsable/searchable site.


  1. NSF Science and Engineering Statistics
    A great resource of original publications from the National Science Foundation.
  2. NST Virtual Library
    Huge library of resources from the National Institute of Standards and Technology. Includes everything from popular publications, to science handbooks, to science and engineering-related encyclopedias.
  3. Internet Math Library
    From the MathForum at Drexel University, the Internet Math Library is a huge collection of online math resources.
  4. OneSmarkClick.com Engineering Resources
    Directory of engineering resources
  5. Ethics Case Studies
    A collection of engineering ethics case studies published by Engineering.com.
  6. Videos Related to Engineering
    All kinds of videos about all kinds of different topics engineers will enjoy.
  7. CFD Online
    An online center for Computational Fluid Dynamics. Features news, a wiki, a jobs database, events calendar, and discussion forums.
  8. NRC Electronic Reading Room
    Collection of online documents published by the U.S. Nuclear Regulatory Commission.
  9. IIE Knowledge Center
    An amazing collection of resources related to industrial engineering from the Institute of Industrial Engineers. Includes archives of thousands of whitepapers, magazine articles, conference proceedings, industrial engineering case studies, links to other online resources, archived issues of publications such as Industrial Engineer and Engineering Economist, and industrial engineering webinars. This is really an incredible resource that doesn’t even require registration.


  1. Newton Excel Bach
    Authored by Doug Jenkins, this is a blog geared toward people working with excel in scientific/engineering applications.
  2. Engineering &…
    A bi-weekly blog tracking current events in engineering.


  1. Pythonxy
    Based on the Python programming language, Pythonxy is a free scientific and engineering development software for numerical computations, data analysis and data visualization. Includes Qt Eclipse and Spyder.
  2. Scilab
    Another free platform for numerical computation with engineering applications.
  3. Octave
    A high-level programming language primarily intended for numerical computations. Mostly compatible with Matlab.
    ASCEND is a flexible modeling environment for solving hard engineering and science problems offering object-oriented model description language, an interactive user interface, and a scripting environment. Originally written by Carnegie Mellon University.

Discussion Forums

  1. Eng-Tips
    A relatively popular engineering forum with topical discussion focused on most engineering disciplines.
  2. Physics Forums Engineering Section
    A physics discussion forum with an active engineering section. Topics include General Engineering, Engineering Systems & Design, Mechanical Engineering, Electrical Engineering, Materials & Chemical Engineering, and Nuclear Engineering
  3. Engineer Boards
    Discussion forum with very active exam prep and exam discussion topics, among others.

Tuition Free Colleges

  1. The Cooper Union
    A tuition-free school located in Manhattan with programs in Engineering, Art, and Architecture. Founded in 1859 by Peter Cooper, who designed and built the first steam locomotive in the U.S.
  2. Franklin W. Olin College of Engineering
    Every admitted student receives a four-year, tuition scholarship valued at approximately $80,000.
  3. Webb Institute
    A tuition-free naval architecture and marine engineering college located in Glen Cove, NY, on Long Island Sound. Webb offers one degree option: a double major in Naval Architecture and Marine Engineering.
  4. Alice Lloyd College
    Most degrees focused on education, but they offer a number of programs in other areas, including a pre-professional program in engineering.
  5. U.S. Naval Academy
    Offers engineering-related majors in Aerospace Engineering, Computer Science, Electrical Engineering, General Engineering, Mechanical Engineering, Ocean Engineering, and Systems Engineering.
  6. U.S. Air Force Academy
    This one was incredibly difficult to find their list of degree programs. You can find a list of degrees around page 64 of this document. Engineering-related majors include Aeronautical Engineering, Astronautical Engineering, Civil Engineering, Computer Engineering, Electrical Engineering, Engineering Mechanics, Environmental Engineering, General Engineering, Mechanical Engineering, Systems Engineering, and Systems Engineering Management.
  7. U.S. Coast Guard Academy
    Offers majors in Civil Engineering, Electrical Engineering, Mechanical Engineering, and Naval Architecture & Marine Engineering.