© 2018 by SPS Surface Protection. 

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Marine and Hull Shield is a thin, clear, extremely smooth and slick, pesticide free and heavy metal free coating of quartz that inhibits growth of most barnacles, mussels and other sea life from metal ship and boat hulls to provide better fuel economy and significantly reduce cleaning cycles. It works on all ferrous metal hulls and non-ferrous metal underwater running gear surfaces. It is also a very effective coating for most underwater concrete surfaces as evidenced by use at fish hatcheries and dams. Reduces drag resulting in better fuel efficiency.  Reduces cavitation damage to propellers.