Economical and free Microsoft Excel, Mathsoft MathCAD & Microsoft Word templates spefically designed to save you time and money. 

Hawaii Marine Templates Banner Pics
Hawaii Marine Templates
45-302 Makalani Street,
Kaneohe, HI, USA   96744-2819

Phone (808) 291-0348 
Fax (808) 247-6443
Hawaii Marine Company - naval architecture, boat & yacht design,  marine, nautical & offshore engineering, maritime expert witness, marine photography, NAVIC 10-92 submittals, nautical systems, professional engineer, stability tests, computer aided design and drafting services Those involved in nautical and professional engineering sectors can benefit from these products.  Products are suitable for use by Naval Architects, Marine, Ocean, Nautical, Offshore, Structural, Civil & Mechanical Engineers, Sailors, Ship, Yacht & Boat Designers, Vessel Owners & Operators, Boat Builders, Construction Contractors & others.
Home Page | Background | References | Stability Article | Trim Article | Barge Trim & Stability Article 
Composite EAM Article | Equivalent Area Method Example | Usage Terms | Privacy Policy | Tech Support
F. A. Q. | User Remarks | Resource Links | Related Links | Sail Boat Books | Nautical Books

Area Properties (including total area, area center
& moment of inertia)
for Ship or Boat Cross Section
or other Large Complex Cross Section
(Metric Units)

Description Computes cross sectional area properties of a complex framing member, like a ship or boat cross section, made up of a numerous components (Like a tees, angles, and flat bars that placed on various pieces of plate).  Area properties from this sheet can be used as a part of the process utilized to obtain flexural stress, average shear stress and deflection. 

The inputs may seem a bit complicated at first.  But they are really easy to obtain and are clearly explained within the template instructions.  To assist with this process, there is a small simple diagram located on the spreadsheet itself, that shows the geometric characteristics that are required as inputs.

This complex section spreadsheet is different in several ways from the normal framing section modulus spreadsheet.  First it is assumed the cross section here is expected to contain a whole lot more components.  Second, the input distances from assumed neutral axis is in "meters" rather than "mm."  Third, some of the outputs are in different units.  The output distance between the ANA and the NA is in "meters" instead of "mm."  The output moment of inertia is in units of "meters squared x centimeters squared" instead of "centimeters to the fourth."  The output section modulus is in units of "centimeters squared x meters" instead of "centimeters cubed."  The units change was to keep the output numbers smaller and thus more manageable.  Traditional ship design practice also follows this mixed units route for large cross sections.

For each framing component of the section the user must select one of two options.  In Option One, which applies to flat bar and plating sections, the spreadsheet will automatically calculate the component's cross sectional area and moment of inertia.  For Option Two, component sectional properties are required from a geometric properties table such as those contained in the A. I. S. C. Manual of Steel Construction or equivalent for metric units.  This option applies to components like tees, angles, I beams, channels, round bar, tubing, pipe, etc.

This spreadsheet is geared toward metric units of measure commonly used in the Europe.  For determining moment of inertia and section modulus in English or Imperial units go the the English units ship or complex section calculation spreadsheet.

For this spreadsheet to work all the components of the section must be of the same material.  For instance a section must be made out of all steel or out of all aluminum.  Another type of spreadsheet is required for a mixed material section (or composite section).

Electronic Document Type:  Microsoft Excel spreadsheet           Cost: $32.00 US funds

Number of Pages: single sheet                        


  • overall depth of framing member (for all components combined)

  • location of assumed neutral axis ANA (perpendicular to loading direction)

  • For each Option One Component (flat bar or plating components) the following are required: description, cross section dimensions, distance to centroid from ANA, radius of gyration for convenience the method of obtaining this dimension is shown in a diagram on the spreadsheet.   The spreadsheet actually contains fifteen rows to accommodate fifteen Option One components.  With proper understanding the user may add additional rows if necessary.  Note that the example below only shows 6 rows.

  • For each Option Two Component (tees, angle irons, channels, i beams, tubing, round bars or similar sections) the following are required: description, cross sectional area, distance to centroid (for determining distance to ANA), moment of inertia about own centroidal axis.  The last three datum are normally obtained from a tables, like those contained in the A. I. S. C. Manual of Steel Construction.  There are 20 rows to accommodate twenty Option Two members. An experienced Excel user may add more rows when required.  The example below only contains 5 rows.


  • total cross sectional area

  • distance from cross sectional area centroid to the ANA

  • moment of inertia of the complex cross section

  • section modulus of the complex cross section

Items Included with the Product:

  • A blank template for you to input data.

  • A set of instructions on how to perform the analysis.

  • A sample calculation already filled out.  It is recommended that each cell within the sample calculation be examined to fully grasp the techniques involved.

  • A drawing of the sample cross section .

  • A sheet containing the products standard "Use Terms."

Suggested Reading or References:

Terms: Prior to purchase, read our End User License Terms.

Important Notice to European Union Buyers: Due to changes in international law, we no longer accept purchases from any individuals located within an EU country.  However, businesses located within the EU are allowed to make purchases, provided that they make the VAT payments for any imported items purchased electronically.  These EU businesses must specify their VAT number in the memo section on the Paypal payment pages.  These changes are effective as of July 1, 2008, and were modified for EU businesses on April 9, 2010.  

Download Now: Click one of the following buttons to pay.  After payment you will be taken directly to the download page.

Minimum System Requirements: Windows 95/98/NT/2000/XP/Vista/Windows7

Customer Comments Regarding Similar Template: Go to feedback page, click here.

Sample: A sample calculation and cross section are shown below.  Note that the example calculations and figure are in English units, but the blank template provided with this product in for metric units.

Sample calculations for area properties including area, center, moment of inertia and section modulus.

A drawing of sample section for sample calculations on spreadsheet.