1423 Powhatan St., Suite 1
Alexandria, Virginia 22314
Phone (703) 836-6727
Fax (703) 836-7491
Email: asnehq@navalengineers.org


ASNE is the leading professional engineering society for engineers, scientists and allied professionals who conceive, design, develop, test, construct, outfit, operate and maintain complex naval and maritime ships, submarines and aircraft and their associated systems and subsystems.  ASNE also serves the educators who train the professionals, researchers who develop related technology, and students who are preparing for the profession.  Society activities provide support for the U.S. Navy; U.S. Coast Guard; U.S. Marine Corps; U.S. Merchant Marine and U.S. Army.

ASNE is the seventh oldest technical society in the United States.  It was founded in 1888 by a group of naval engineering pioneers, most of them officers of the U.S. Navy's Engineering Corps, who sought a unified approach to their profession in order to make the most of new advances in technology. The purposes of ASNE are:           

  • to advance the knowledge and practice of naval engineering in public and private applications and operations,
  • to enhance the professionalism and well-being of members, and
  • to promote naval engineering as a career field.

For 125 years, the Society’s objectives have been strengthened and preserved to meet the changing needs of a time-honored profession. Today ASNE conducts a variety of technical meetings and symposia, publishes the highly regarded Naval Engineers Journal and a number of other technical proceedings and publications, and fosters professional development and technical information exchange through technical committees, local section activities and cooperative efforts with government organizations and other professional societies.

The Society's annual meeting, ASNE Day, is typically held in February of each year in the Washington, DC, area. The meeting features major addresses by high level industry and government leaders and panel discussions by leading members of the profession.  It also includes presentation and discussion of technical papers on a variety of timely naval engineering topics, presentation of the Society's prestigious annual awards and a large exposition with government and industry exhibits covering the full spectrum of naval engineering technology. ASNE Day is highlighted by the Society’s annual Honors Gala, attended by hundreds of executives and senior managers from both government and industry.

Our website is designed to not only serve our members, but also to support scholars, students and others interested in the varied field of naval engineering.  We welcome your suggestions on ways we can improve your experience. 


Sponsored by the Office of Naval Research under grant N00014-17-1-3142 

Buoyancy and Archimedes Principle

Use this simulation to explore how objects float. Be sure to pay attention to the data and use the scales! This data will be useful when you try to set a new FLEET high score.


 Problems running the simulation? See below.


Things to Explore

1.  Use the Intro version of the simulator for the two questions below. You can click and hold a block to move them, you can even hold them underwater if you want.

    A. What is the volume and weight of the brick block? How much force does gravity pull on the block?
    B. What is the volume and weight of the wood block? How much force does gravity pull on the block?


2. Use the bottom left checkboxes to turn on the force diagram arrows and add the force values too.

A. Diagram the forces that are shown when one block is in the water.

B. Diagram the forces on each block when you stack two blocks on top of each other in the water.


3. Click the tab in the upper left for "Buoyancy Playground." This will give you access to more variables to manipulate.

4.  Click the "Two" button under Blocks so that you can experiment with two blocks. (If you want to design your own material, click "My Block" in the upper left corner.)

5. Create a data table that records the density, the displacement, the force of gravity, and any other variables you determine are relevant to answer the questions below.

Questions & Design Challenges:

A. What is the difference in the force of gravity on one 10-kg brick block and on two stacked 5-kg brick blocks?

B. What are two ways that you can make the cube of aluminum float?

C. Design a material that has the least surface area contact with the water.

D. Design a material that just barely floats in water. 

E.  Design a material that just barely floats in honey.

F. Draw a force diagram with one wet block and one dry block. One block will be floating in water, the dry block will be stacked on top of the first block. Be sure to document all the forces. 


Connecting to FLEET

6. Now talk about density and buoyancy forces in relation to FLEET.

A. What do you think the density of your ship is?

B. How would you arrange the materials in your boat to have the greatest buoyancy?

C. How would you arrange the materials in your boat to have buoyancy and stability?


Extra time?

Challenge 1: Make the wooden block hit the "scale" that measures forces in the water then bounce off it.

Challenge 2: Make the wooden block rest on the "scale" that measures forces in the water but exert less than 1N of force. 

Challenge 3: Watch the first minute of this video from the Physics girl, then use this simulation to think through the possible solutions.



Problems running the simulator?

If "Click to Run", does not work for you, ensure you have a version of Flash or download it here.

Windows Macintosh Linux
Microsoft Windows
Macromedia Flash 9 or later
OS X 10.9.5 or later
Macromedia Flash 9 or later
Macromedia Flash 9 or later