Sikkens Cetol® Marine : Sikkens Cetol Marine is a durable protective wood finish for interior and exterior use on boats. Cetol Marine provides a flexible breathable finish, superior ultraviolet and weathering protection for teak and other woods commonly found on boats, or as a priming coat only when used with Cetol Marine Gloss. Please note that Cetol Marine may not be used below the waterline. ePainStore.com is an authorized Sikkens Dealer that has been shipping Sikkens Cetol Marine since 1998!