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Defies the elements! The water-resisting qualities of Whitlock WATERFLEX cordage are of utmost importance especially in marine service where dampness, rain and continued immersion in water cause ordinary rope to swell, harden and kink, making it extremely hard to manage. The use of WATERFLEX avoids these difficulties. WATERFLEX remains flexible under all conditions and is easy to handle and splice, wet or dry. It may be left out on deck in all kinds of weather with the assurance of protection against deterioration or weft rot, which shortens the serviceable life of ordinary rope. WATERFLEX FIBORE (our patented fibre-core rope) is unques- tionably the strongest and most efficient type of large cordage ever developed. No additional charge is made for the patented WATERFLEX feature. WHITLOCK CORDAGE COMPANY oe 46 South Street oS te an arehouses HO ae yea City, N. J. New York Chicagi as - * Renee City Progress in Oil-Tank Ship Construction “BRACKETLESS—SYSTEM” (PATENTED) Eliminates Bulkhead Brackets. Eliminates Bulkhead Leakage. Greatly simplifies construction. Greatly reduces cost of upkeep and cost of damage repairs. Greatly reduces cost of cleaning tanks. Substantially increases the longitudinal strength beyond the well-tried ‘‘Isherwood System.” : V4 =, Tt is iN IW ) Sir Joseph W. Isherwood, Bt. Witiarenus, London, B.C. 3 MARINE REVIEW—June, 1927 83