Collective Protection (ColPro) for Ships
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ColPro promotes mission success by eliminating the burden of protective masks and suits.
New World is a leader in the design and testing of positive-pressure collective protection systems for ships. These systems remove airborne chemical, biological, radiological, and nuclear (CBRN) contaminants from the air, enabling operations to proceed without the need for individual protection equipment (IPE).
We offer a complete range of products and services for ship ColPro. Our experience has taught us how to design ColPro systems for weight and cost savings while improving performance and operational effectiveness.
Collective protection is an air filtration and pressurization system that is often integrated with the ship’s ventilation system. ColPro works by filtering outside air drawn in by the ventilation system and pressurizing that air to create a toxic-free area (or zone). Movement into and out of the pressurized zone requires use of air locks to ensure that pressure is maintained at desired levels.
ColPro is installed on surface combatants and amphibious ships to protect command and control spaces, berthing spaces, engineering stations, and medical spaces. For these larger ships, ColPro is operated on a "full-time" basis. On smaller ships, such as patrol boats and cutters, ColPro may be operated on a "part-time" basis where smaller areas (e.g., pilot house) are pressurized when threat conditions warrant.

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New World offers complete ColPro services from concept design through in-service support:
- Definition of zone boundaries and air lock locations to support operational needs
- Sizing and arrangement of CBR Filter Systems to meet air flow requirements
- Analysis of flow uniformity and pressure drop through CBR Filter Systems
- Determination of equipment requirements for flow control and pressure monitoring
- Equipment installation and testing support through our Field Services team
- Filter system leak testing (aerosol and gas) to ASME N510
- Development of technical reports, test plans, and operation and maintenance manuals
- Sale of replacement parts, including filters and gaskets, from our in-house inventory
- In-service engineering support throughout the life-cycle

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We sell and service CBR filter systems, filters, and monitoring equipment used by both U.S. and foreign navies, including equipment for the U.S. Navy’s Collective Protection System (CPS) and Selected Area Collective Protection System (SACPS).
The illustrations below show two methods of creating ship ColPro systems. The first illustration shows an integrated approach in which the CBR filter system is located within the ship’s mechanical space (fan room). The second illustration shows a modular approach in which the CBR filter system is packaged in a deck-mounted ISO container. This approach allows for rapid protection and redeployment for expeditionary or mobile applications.
Zone Pressure Control

Zone Pressure Monitoring
Zone Pressure Alarm
Pressure Indicator Transmitter
Pressure Indicator
CBR Filter System
OpenAire Marine
U.S. Navy
CBR Filters
CBR Filter Set
High Capacity HEPA Filter
Bag Prefilter
Airflow Regulation
Flow Regulator
ColPro equipment for a dedicated Total Protection (TP) Zone
CBR Filter System
AirePod
Modular CBR filter system for rapid protection or expeditionary deployment
New World offers ColPro products and services to select foreign customers, and is experienced with the legal transfer of our ColPro technology using Technical Assistance Agreements (TAAs) and export license documents.
We are committed to supporting our ColPro systems as they are deployed throughout the world, and stock a variety of service parts for shipment worldwide.
1. What pressure (overpressure) level is needed for ship ColPro?
ColPro zones - or safe rooms - are often maintained at positive pressure relative to the outside or adjacent spaces. This overpressure ensures that air will always flow from the zone through any leak paths that are not sealed. Overpressure levels vary according to many factors, including local weather, mission, and ship specification documents. New World can help you specify or design a ColPro system to meet your needs.2. What are air locks and how are they used?
Air locks are vestibules that allow safe ingress to and egress from pressurized ColPro zones. Air locks have two doors that must be opened one-at-a-time to maintain positive pressure within the protected zone. Air locks often feature an air purge to flush airborne contaminants that may enter when the outside door is opened. New World can help with the design and implementation of air locks and purge controls.3. Do you offer CBR filter installation and testing services?
Yes. New World’s Field Service team is available to perform both CBR filter installation and in-situ leak tests based on the requirements of ASME N510. We have the equipment and trained personnel to conduct both aerosol and gas leak tests on nearly all radial-flow filter systems, including the U.S. Navy’s Ship Collective Protection System (CPS) and Selected Area Collective Protection System (SACPS). We can also balance ventilation systems to design flow rates and conduct pressurization tests.

