A system includes a UV light source and an optical medium coupled to receive UV light from the UV light source. The optical medium is configured to emit UV light proximate to a surface from which biofouling is to be removed once the biofouling has adhered to the protected surface. A method corresponds to the system.

The present invention relates to an antifouling coating composition, an antifouling coating film, a substrate with an antifouling coating film, a antifouling substrate, a method for producing substrate with an antifouling coating film, and a method for preventing substrate from fouling. The antifouling coating composition includes a hydrolyzable polymer (A) including at least one selected from the group consisting of a polymer (A1) having a structural unit represented by the formula (1) below and a polymer (A2) having a structural unit represented by the formula (2) below, a tertiary carboxylic acid component (B) including versatic acid, and an antifouling agent component (C).

##STR00001##

[In the formula (1), M is zinc or copper, and R.sup.1 independently at each occurrence is a hydrogen atom or a methyl group.]

—COO-M-O—COR.sup.2  (2)

[In the formula (2), M is zinc or copper, and R.sup.2 is an organic group.]

The present invention relates to an antifouling coating composition, an antifouling coating film, a substrate with an antifouling coating film, a antifouling substrate, a method for producing substrate with an antifouling coating film, and a method for preventing substrate from fouling. The antifouling coating composition includes a hydrolyzable polymer (A) including at least one selected from the group consisting of a polymer (A1) having a structural unit represented by the formula (1) below and a polymer (A2) having a structural unit represented by the formula (2) below, a tertiary carboxylic acid component (B) including versatic acid, and an antifouling agent component (C).

##STR00001##

[In the formula (1), M is zinc or copper, and R.sup.1 independently at each occurrence is a hydrogen atom or a methyl group.]

—COO-M-O—COR.sup.2  (2)

[In the formula (2), M is zinc or copper, and R.sup.2 is an organic group.]

The invention provides a marine antifouling composition comprising: (a) 1 to 50% by weight of a cylic volatile methylsiloxane selected from the group consisting of hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopenta-siloxane and dodeca-methylcyclohexasiloxane; (b) 1 to 20% of a surfactant selected from the group consisting of polyoxyethylene monostearate, steareth-40, octylphenoxy polyethoxyethanol, steareth-20, and a C.sub.11-C.sub.15 secondary alcohol ethoxylate; and (c) the balance water.

The invention provides a marine antifouling composition comprising: (a) 1 to 50% by weight of a cylic volatile methylsiloxane selected from the group consisting of hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopenta-siloxane and dodeca-methylcyclohexasiloxane; (b) 1 to 20% of a surfactant selected from the group consisting of polyoxyethylene monostearate, steareth-40, octylphenoxy polyethoxyethanol, steareth-20, and a C.sub.11-C.sub.15 secondary alcohol ethoxylate; and (c) the balance water.

A remotely positioned, ultrasonic wave producing, and low voltage anti-fouling system comprising; a computing module, a mounting system having a first end and a second end, wherein the first end is attached to vessel or a structure, a substantially waterproof enclosure detachably engaged with the second end of the mounting system, at least one transducer positioned within the substantially waterproof enclosure and cooperatively connected to the computing module, wherein the at least one transducer produces a sound wave able to impinge upon a submerged surface, at least one wave form generator cooperatively connected to the computing module and the at least one transducer, at least one power amplifier cooperatively connected to the at least one wave form generator and the at least one transducer, and at least one sensor cooperatively connected to the computing module, wherein the at least one sensor substantially.

A remotely positioned, ultrasonic wave producing, and low voltage anti-fouling system comprising; a computing module, a mounting system having a first end and a second end, wherein the first end is attached to vessel or a structure, a substantially waterproof enclosure detachably engaged with the second end of the mounting system, at least one transducer positioned within the substantially waterproof enclosure and cooperatively connected to the computing module, wherein the at least one transducer produces a sound wave able to impinge upon a submerged surface, at least one wave form generator cooperatively connected to the computing module and the at least one transducer, at least one power amplifier cooperatively connected to the at least one wave form generator and the at least one transducer, and at least one sensor cooperatively connected to the computing module, wherein the at least one sensor substantially.

An internal ultraviolet-C light emitting diode antifouling system and method that include a waterproof, light transmissible potted enclosure; an object disposed within the waterproof, light transmissible potted enclosure; and at least one ultraviolet-C light emitting diode disposed within the waterproof, light transmissible enclosure, wherein the at least one ultraviolet-C light emitting diode is configured to emit light on the object, wherein the light is configured to prevent biofouling on the object.

An internal ultraviolet-C light emitting diode antifouling system and method that include a waterproof, light transmissible potted enclosure; an object disposed within the waterproof, light transmissible potted enclosure; and at least one ultraviolet-C light emitting diode disposed within the waterproof, light transmissible enclosure, wherein the at least one ultraviolet-C light emitting diode is configured to emit light on the object, wherein the light is configured to prevent biofouling on the object.

The instant invention describes an anti-biofouling structure for placement onto structures or surfaces that are exposed to aquatic environments. Embedded within the anti-biofouling structure are agents that can diffuse out of the structure and prevent the formation and/or accumulation of plant and animal species build-up that creates biofouling. The instant invention also describes a system for preventing biofouling of an object stored in an aquatic environment which includes the anti-biofouling structure and a protective cover element constructed and arranged to fit various structures, such as boat propellers.