Companies such as Global Ocean Security Technologies, Siren Marine and SPOT make specialized security products for any vessel. GOST's products include immobilizers, cloaking devices, acoustic and strobe systems, surveillance cameras, tracking services, security and monitoring services, and all-in-one systems.
GOST's cloaking device fills the protected area with a cloud of fog made from glycol, a food additive found in toothpaste. It reduces visibility to almost nothing and doesn't damage or mar surfaces. GOST also offers an acoustic sound bar that hits four separate frequencies, targeting the inner ear, and making it impossible to remain aboard.