Japanese Mark II Square Lashing

How to Tie the Mark II Square Lashing: Video

James Keller, Director of the Pioneering area at the 2013 National Jamboree, related a story about the Japanese Mark II Square Lashing. He described how back in 1993, Adolph Peschke had mandated that his staff should just use the Japanese Mark II Square Lashing for the national jamboree’s pioneering projects. Some of the Pioneering staff back then had not as of yet become familiar with the lashing, and at first, some were a little hesitant to adopt it. But, after becoming acquainted, their overwhelming consensus was, why had they wasted so much time over the years using the traditional Square Lashing.

Wraps that are even and snug! Fraps that are tight!

Scouts Lashing on the Transoms of a Single A-Frame Bridges at the 2013 Jamboree

The following text is by Adolph E. Peschke as presented in the 1998 printing of the 1993 edition of the Pioneering Merit Badge Pamphlet:

The Japanese Mark II Square Lashing has found its way into Scouting in the United States through Wood Badge training in England, and because of the work of John Thurman, camp chief of Gilwell. He observed it on one of his many world trips related to Wood Badge training.

This lashing is a straightforward approach to the task of lashing two spars together. Begin by placing the spars in the desired position. Now fold your lashing rope in half.

The midpoint of the rope is placed around the vertical spar and just under the crossing spar (see figure 108). Now work both ends of the rope at the same time to make three wraps around the spars (see figure 109).

After completing the three wraps, bring the two ends up between the spars in opposite directions to make the frapping turns around the wraps (see figure 110). Pull the frapping turns tight, and complete the lashing by tying the two ends with a Square Knot (see figure 111). It’s that simple.

Tying the Japanese Mark II Square Lashing

Tying the Japanese Mark II Square Lashing

The advantage of this lashing is that you’re working both ends of the rope at the same time. This makes it much quicker to tie since each hand has less rope to pull through. This lashing has the same holding effect as both the traditional and modified Square Lashings.

If more support is needed for the crossing spar, a Clove Hitch can be tied at the midpoint of the rope. Tie the Clove Hitch to the vertical spar just below the crossing spar. You can rest the crossing spar on the Clove Hitch as the lashing is being made. Then use both ends to complete the lashing as described above.

Steps to take when tying the Japanese Mark II Square Lashing: Start first wrap, continue first wrap, complete first wrap, cross ropes in the back, continue second wrap under cross spar, cross ropes underneath, send ropes to the front, start 3rd wrap, continue third wrap over cross spar, in the back, cross on top, three wraps completed, prepare to frap. Cross ropes on top of wraps, take frapping turns between spars, complete two tight fraps, finish up with a square knot.

Photographed Procedure (First click on the above image, then for a a full-page view, start second wrap, click on smaller image that appears.)

View Video on How and Why to Tie the Japanese Mark II Square Lashing.

  1. — Up / Over / Behind / Cross —
  2. — Down / Over / Behind / Cross —
  3. — Up / Over / Behind / Cross —
  4. — Front / Cross / Down —
  5. — Cross / Up / Knot —
Categories: Scout Pioneering | Tags: , , , , , , | 20 Comments

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20 thoughts on “Japanese Mark II Square Lashing

  1. Pingback: Japanese Square Lashing - Scoutmastercg.com

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  17. Pingback: Japanese Square Lashing - Scoutmastercg.com

  18. Very good presentation of this lashing! I presented the original “Mark I” version of this lashing as originally shown in John Thurman’s book on my Website: http://scoutingrediscovered.com/pioneering/rediscovering-the-secret-japanese-square-lashing/

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