Platform leg plug
Platform structure for maritime installations
Platforms for sea-bottom exploitation
Platforms resting on an underwater structure
Plough
Plough assembly
Plow for use in laying drain-tile
Plug for offshore platforms and the like
Pneumatically inflatable flexible envelope type dam
Pollutant containment boom
Pollutant containment means
Polluting oil recovery apparatus
Poly boom stick j.r.g.
Porous dike intake structure for fish diversion
Porous jacket-type weeping tile
Portable and adjustable boat dock bumper assembly
Portable aquatic hydrocarbon recovery system
Portable cleat for marine use
Portable culvert beaver guard
Portable dams