Floating protection barrier gate

Abstract

A protection apparatus protects a harbor or an area in a body of water or adjacent to a body of water. The protection apparatus floats on the body of water, and includes a plurality of barrier units positioned side-by-side, each of the barrier units includes a composite-based durable barrier structure. The barrier structure is configured to hold a net in place in order to protect an area in the body of water or abutting the body of water from waterborne craft. At least one of the barrier units includes a gate that allows passage of waterborne craft into and out of the protected body of water.

Description

BACKGROUND OF THE INVENTION [0001] A. Field of the Invention [0002] The invention relates generally to protection barriers and, more particularly, to durable, floating boat barriers that are used to protect areas such as harbors, water regions, or other types of land or water areas from high speed and low speed water craft attack. [0003] B. Description of the Related Art [0004] In the current environment with terrorist activities on the rise, there is a need to protect assets from terrorist attacks. One type of protection device is a floating harbor protection barrier system designed to provide protection to military and commercial harbors from high speed surface boat attacks. [0005] Initial research into harbor protection by the Naval Facilities Engineering Service Center led to the development of a mostly mild-steel structure called the Port Security Barrier. The Port Security Barrier consists of three steel pontoons supporting a steel box beam, steel supports for netting, steel b...

AI Technical Summary

Problems solved by technology

While the use of GRP for components of a harbor protection barrier is an improvement over the use of a mostly-steel or an all-steel construction for a harbor protection barrier in some respects (e.g., lower maintenance costs), it still has problems associated with not being as structurally strong as the mostly-steel construction, and thereby it does not provide as good a protection or durability as one would get from the mostly-steel construction or all-steel construction of a harbor protection barrier.

One can surmise from that test that boats following a lead boat (which impacted the GRP protection barrier) may be able to follow the same path in the water as the lead boat and thereby penetrate into a region protected by one or more GRP protection barriers, which is clearly undesirable.

Furthermore, conventional GRP Port Security barrier modules are not particularly sturdy with respect to dealing with forces due to boat attacks and / or forces due to severe weather conditions.

Also, for an all-steel construction or for a mostly-steel construction of a Port Security barrier, there is a problem in that maintenance costs are very high.

For example, when the Port Security barrier is floating in the water, it deteriorates over time due to the sea water that comes in contact with the steel.

This leads to rusting, which causes deterioration of the Port Security barrier, thereby making it less structurally sound.

While such steel-constructed Port Security barriers typically have a paint coat to partially counter the rusting problem, the conventional Port Security barriers have to be painted fairly often in order to maintain the structural integrity of the paint barrier, which again results in high maintenance costs.

Furthermore, with conventional Port Security barriers, there is a problem associated with coupling two or more harbor protection barrier modules together to protect a large region, such as a harbor.

This loose coupling results in undesired stresses being imparted to individual protection barrier modules as they flop around in the water due to inclement weather conditions such as high wave and high wind conditions.

Such a loose coupling between protection barrier modules may result in damage to individual protection barrier modules, with results in an undesired cost associated with repairing protection barrier modules already installed or having to utilize new protection barrier modules to replace protection barrier modules that are damaged beyond repair.

There is also a problem with respect to providing ‘gates’ for allowing friendly boats into a protected area.

Current protection barrier structures do not provide for such gates, thereby making it difficult for friendly boats to pass into and out of protected water areas.

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