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Note: Please refer to our Online Catalog for available Shadetree Sizes.

Rectangular Style Shadetree Measuring Instructions

  1. At a point 18" above the boom, measure from the main mast to the backstay.  In the event that shrouds are aft of the mast, measure from shrouds to backstay.

    Measurement:  


  2. Based on the above dimension determine the appropriate fore and aft length from the rectangular Shadetree models listed.  Available lengths are 114", 156", 172", 210" and 230".  In Diagram "A" the aft space available is 194" making the 172" fore and aft Shadetree model the best fit.

    Best Length:  


  3. To determine best width (port to starboard) of the rectangular Shadetree, measure from lifeline to lifeline 6" aft of the main mast.  If shrouds were used in the measurement above, measure lifeline to lifeline 6" aft of shrouds.

    Measurement:  


  4. Select the best width rectangular Shadetree from the table below, based on lifeline to lifeline dimension.  Lifeline to lifeline dimension is as follows: 90" to 108" model width 110", 108" to 152" model width 156", 152" to 172" model width 180", 172" to 190" model #250 or 255.

    NOTE – Stated widths reflect the arch created by the support system, not boat’s width.

    Best Width:  

     

  5. Based on your measurements and upon available models, estimate the best fit for your boat.  The best model from Diagrams A&B is Shadetree model #230, 172" fore and aft by 156" wide.

    Best Rectangular Fit:


Submit this form to Shadetree, and have them perform a personal evaluation based on your measurements.

Name:
E-Mail:
Address:
Phone #:

 

Tapered Style Shadetree Measuring Instructions

  1. At a point 18" above the boom, measure from the main mast to the forestay.  In the event that shrouds are forward of the main mast, measure from shrouds to forestay.

    Measurement:  


  2. Based on the length of the above measurement, determine the appropriate fore and aft length for the tapered Shadetree models listed.  Available fore and aft lengths are 76", 114", 156", and 172".

    Note: Rigging such as baby stays or cutter rigs will be accommodated by re-enforced splits in the tapered Shadetree.

    Best Length:  


  3. To determine the appropriate width (port to starboard) of a tapered Shadetree, measure from lifeline to lifeline 6" forward of the mast or shrouds, if present.  In Diagram "A", the fore and aft space available is 170" making the 156" fore and aft tapered Shadetree the best fit.

    Measurement:  


  4. Use the following table to determine the best width.  Widths available are 110", 136", 156", and 180".

    88" to 100" model width 110" (wide edge)
    100" to 130" model width 136" (wide edge)
    130" to 160" model width 156" (wide edge)
    160" to 192" model width 180" (wide edge)

    NOTE – Stated widths reflect the arch created by the support system, not boat’s width.


    Best Width:  

  5. Using the dimension fore and aft length and the lifeline to lifeline width table, determine the best fitting model for your boat by comparing it to our available models.  In Diagrams "A" & "B" measurement is 136" making 156" wide edge the best fit.  The best model from the diagrams is the Shadetree model #130, 156" fore and aft and 156" wide (wide edge).

    Best Tapered Fit:  

Submit this form to Shadetree, and have them perform a personal evaluation based on your measurements.

Name:   
E-Mail:  
Address:   
Phone #:  

Additional Measuring Notes

  1. Shadetrees work extremely well on ketches & yawls.  Simply use the dimension of main mast to mizzen mast instead of main mast to backstay.

  2. If your boat tapers dramatically in beam from the mast to transom, as with double enders or older traditional shapes, the tapered Shadetrees designed for the bow of the boat can be reversed and used in the stern for a more custom fit.

  3. Lazy jacks can be moved forward to the mast allowing for the Shadetree to be erected.

  4. Dutchman systems can also move forward, however if they are fixed, Shadetree will provide materials and diagrams for retro fitting.