Marine Industry Ventilation

Table of Contents

The Marine industry demands a level of reliability that only the highest quality industrial ventilation equipment can provide.

Environments involving high moisture, salt water, corrosives, high heat and heavy vibration, and in many cases all at the same time. These are all elements that require not only heavy duty equipment but also proper materials of construction, proper coatings and all built to the strict shipbuilding standards. The treatment process produces heat, corrosion, moisture and fumes unlike any other.

The benefit of high-caliber marine duty fans and blowers serve two main purposes:

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Regardless of the type of maritime application, ventilation is needed to maintain the ship engine’s performance. Some of the main requirements for marine system ventilation is to reduce stale air, prevent mold from growing and stabilize humidity levels.

 

There are other specifications that marine fans must adhere to in order to be appropriate for the application. The material used plays a role in if the ventilation equipment is suitable for maritime applications. Certifications are, but not limited to:

Fans & Blowers for the Marine Industry

Mixed Flow Fans

Engineered specifically for the offshore engineer. Nine standard sizes of compact, in-line mixed flow fans, with capacities up to 120,000 cfm and pressure up to 12″. All have steep pressure/volume characteristics and are suitable for high wind environments without excessive change in air delivery performance.

Although mixed flow fans are a viable option for many different marine applications, they are especially beneficial for vessels where there are people on board, such as cruise ships, casino boats, and yachts.

Tube Axial Fans

marine tubeaxial fanTube axial fans can be mounted in any position, vertical or horizontal. They are available in direct drive or belt drive motors. Propellers provide taper lock bushing. Due to the axial fan’s marine duty application, all motors are enclosed. The exterior of the duct axial fan features watertight conduit boxes.

Specifications:

Centrifugal Fans

Marine duty centrifugal fans with corrosion resistant coatings featuring single-width, single-inlet (SWSI) design. Backward-curved blades are available for maximum efficiency.

Suitable for clean air or industrial fumes. Low pressure & high airflow centrifugal fans with the electric motor directly coupled to the can with an impeller splined to the shaft.

Specifications:

Vane Axial Fans

Vane axial fans are ideal for marine applications due to it’s efficiency and minimal clearance from the blade tips and fan housing. Beneficial due to its high volume of air at medium to high pressure where space is a luxury.

Marine Applications

Marine Engine Rooms

Marine ventilation systems demand industrial grade fans for compact spaces below the ship’s deck. Marine duty fans must perform in these demanding environments and are typically designed with a small footprint making them ideal for confined spaces. Furthermore, water-tight electrical connections are necessary to resist corrosive environments. That is why marine duty electrical connections and IEEE45 motors are necessary for both below and above-deck applications.

Container Ships, Cargo Vessels & Barges

cargoship ventilation bridgeCargo and container ships may require ventilation to prevent condensation, dissipate gas, and remove heat. Ventilation is key if the cargo aboard is generating heat or liable to combustion. If the latter is a possibility then ventilation is imperative for not only the goods being transported, the cargo ship itself but also for the safety of the crew of the ship.

It is not uncommon for barges to transport chemicals that must be properly ventilated. The cargo aboard a barge must be monitored and ventilated accordingly.

Casino Boats, Cruise Ships & Yachts

HVAC for Cruise shipsVentilation systems on casino boats, cruise ships, yachts and other large vessels have different ventilation requirements depending on the size and amount of people onboard. Casino boats and cruise ships previously relied on filtration systems, but have since switched to “fresh air mix” ventilation, especially in public spaces and staterooms. Mixing fresh air with circulated air reduces costs, but more importantly keeps pathogens from spreading. HVAC systems continuously supply 100% fresh, filtered air from outdoors to all indoor spaces.

In addition to fresh air mix, HEPA filters are applied. The air is also treated with UV-C light to eradicate viruses not caught in the HEPA filter. UV-C light has been proven to kill coronaviruses like COVID-19 (FDA Source).

Most yachts are gasoline powered and are regulated by law to meet ventilation requirements. Fumes from the yacht’s engine can accumulate in the bilge, which increases the chances of explosion if not ventilated properly using heavy-duty marine fans. Then there is the excess heat that is generated by the yacht. The heat not only diminishes the boat’s engine, but reduces alternator output and battery power. Other issues of a poor ventilation system on yachts are damage to belts, hoses and engine components.

Excess heat not only impairs engine performance, but reduces alternator output and battery power, and can damage hoses, belts and other components.

Ventilation Systems for Boatyards

The equipment on a dredger requires a robust ventilation system that must provide equipment areas with a steady flow of fresh air for both equipment and personnel. Dredgers consist of heavy duty centrifugal pumps and other heavy-duty equipment onboard that generates a significant amount of heat. Marine duty fans and blowers must withstand stringent working conditions in order to keep downtime to a minimum. Furthermore, the wellbeing of the crew and staff is vital, therefore fresh air to improve the personnel’s indoor air quality is imperative.

Ventilation systems must also adhere to vibration and noise standards. In account of such, accessories for maritime fans such as sound dampers and suppressors are available.

Dredger Ventilation Equipment

dredger ventilation equipment HVACThe equipment on a dredger requires a robust ventilation system that must provide equipment areas with a steady flow of fresh air for both equipment and personnel. Dredgers consist of heavy duty centrifugal pumps and other heavy-duty equipment onboard that generates a significant amount of heat. Marine duty fans and blowers must withstand stringent working conditions in order to keep downtime to a minimum. Furthermore, the wellbeing of the crew and staff is vital, therefore fresh air to improve the personnel’s indoor air quality is imperative.

Ventilation systems must also adhere to vibration and noise standards. In account of such, accessories for maritime fans such as sound dampers and suppressors are available.

Marine Fan Accessories

Marine Fan Sizes

Each fan is available for custom order. From 12” to 72”.

Marine Fan Features

Custom Materials Available

Ventilation Finishes & Coatings

Contact Us

R. Williamson & Associates has been in the ventilation business since 1931 and has a long history of providing ventilation equipment for maritime applications.

Should you have any questions or comments regarding an application please do not hesitate to reach out to one of our trusted experts.

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