Orbital cellulitis is a serious condition that usually occurs secondary to infection in the maxillary and ethmoidal paranasal sinuses. If left untreated, it can lead to blindness, cavernous sinus thrombosis, meningitis, or cerebral abscess.
Marine plywood is frequently used in the construction of docks and boats. It is much more expensive than standard plywood: the cost for a typical 4-foot by 8-foot 1/2-inch thick board is roughly $125 U.S. or around $3.50 per square foot, which is two to three times as expensive as standard plywood, depending on grade.arine plywood can be graded as being compliant with BS 1088, which is a British Standard for marine plywood. There are few international standards for grading marine plywood and most of the standards are voluntary. Some marine plywood has a Lloyd's of London stamp that certifies it to be BS 1088 compliant.
1 For small boats, quality 4 mm plywood is a good substitute for the 1/4 exterior ply often specified. 2  Marine plywood (except for Fir) will not check. 3  That feature may by itself pay for the difference in cost.