EM 1110-2-1100 (Part I)
30 Apr 02
Figure I-3-5. Example of wood crib breakwater typical of the construction technique
used in the Great Lakes during the late 1800's, in this case from Calumet Harbor,
Illinois. Skilled wood craftsmen built the cribs on land or on a barge, floated them
into place, and sank them using rock and gravel fill. Almost 1,000 of these
breakwaters were built around the Great Lakes, and many of them, now a century
old, need rehabilitation.
I-3-14
History of Coastal Engineering
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