B.I.A.S.

Brownie’s Integrated Air System

B.I.A.S. logo for Brownie's Integrated Air Systems, featuring "Diving Made Easy!" tagline, representing innovative diving solutions and convenience.

How Does Brownie’s THIRD LUNG™ Enhance Your Diving and Boating Experience?

The era of traditional dive gear cluttering the deck of your boat has been replaced by the simplicity of
our hidden compressor. A simple flip of a switch will have you diving at a moments notice, thus
creating the ultimate experience in luxury and Diving Made Easy.

The BOS 1

Portable diving compressor system showcasing the Motor/Compressor module of Brownie’s Integrated Air System, designed for efficient weight distribution and ease of placement in diving applications.

For proper weight distribution and ease of placement, Motor/Compressor and Battery modules are individually mounted on King Starboard with pre-drilled holes. Modules snap together with Anderson fittings.

The BOS 1: Key Features

  • Motor

    All BIAS systems begin with breathing air quality and spark-free, sealed, marine quality variable speed motors and controllers.

  • Compressor

    Single Head Direct Drive compressor and sealed Stainless Steel Compressor Bearings with Breathing-Air/Oxygen compatible grease is the hallmark of our proprietary diver-specific compressor. The complete main bearing and eccentric crank assembly are machined from high-quality stainless steel. Even our reed-valves are made in America by a very precise etching method and are pure high-grade stainless.

  • Power

    Battery for this package is NOT provided.  A 24 v battery source is required to operate the compressor.

  • Performance

    2 divers to 65’, 3 divers to 35’

  • Run Time

    Run time determined by your battery selection.

  • Weight & Dimensions

    24 LB – Compressor 13″ L x 9″ W x 15.5 “H

BOS 1 Mounting Overview: Motor/Compressor & Battery Modules

Single head direct drive compressor mounted on a platform with two blue batteries, featuring wiring and connectors for a diver-specific air system by Brownie's THIRD LUNG™.

For proper weight distribution and ease of placement, Motor/Compressor and Battery modules are individually mounted on King Starboard with pre-drilled holes. Modules snap together with Anderson fittings.

The BOS 2: Key Features

  • Motor

    All BIAS systems begin with air quality and spark-free, sealed, marine quality variable speed motors and controllers.

  • Compressor

    Single head Direct Drive compressor and stainless Steel Compressor Bearings with Breathing-Air/Oxygen compatible grease is the hallmark of our proprietary diver-specific compressor. The complete main bearing and eccentric crank assembly are machined from high-quality stainless steel. Even our reed-valves are made in America by a very precise etching method and are pure high-grade stainless.

  • Power

    Battery pack included.  (2 ea) 12v RELION Lithium Iron Phosphate batteries with a waterproof (IP68) high efficiency DC/DC charging system that takes 12v input and charges the 24v battery pack module.

  • Performance

    2 divers to 65’, 3 divers to 35’

  • Run Time

    2-3 hours fully charged

  • Weight & Dimensions

    Compressor 13L x 9W x 15.5H – 24 LB; Battery Pack: 12.5L x 10.5W x 11.5H – 35 LB

The BOS 3

Diver-specific air compressor with stainless steel components, integrated battery, and control features, highlighting innovative diving technology by Brownie’s THIRD LUNG™.

For the longer dive, The BOS 3 operates off of (2) Odyssey PC1500 batteries and recharges in approximately 6 hours off of the boats power source. Modular components allow for easy placement and even weight distribution throughout your vessel.

The BOS 3: Key Features

  • Motor

    All BIAS systems begin with  breathing air quality and spark-free, sealed, marine quality variable speed motors and controllers.

  • Compressor

    Single head Direct Drive compressor and sealed stainless Steel Compressor Bearings with Breathing-Air/Oxygen compatible grease is the hallmark of our proprietary diver-specific compressor. The complete main bearing and eccentric crank assembly are machined from high-quality stainless steel. Even our reed-valves are made in America by a very precise etching method and are pure high-grade stainless.

  • Power

    Battery pack included.  (2 each) 12v ODYSSEY PC1500 batteries with a waterproof (IP68) high efficiency DC/DC charging system that takes 12v input and charges the 24v battery pack module.

  • Performance

    2 divers to 65’, 3 divers to 35’

  • Run Time

    3.5-4 hours fully charged.

  • Weight & Dimensions

    Compressor 13″ L x 9″ W x 15.5″ H – 24 LB; Battery Pack 17″ x 14″ x 17″ -48 LB

Continuous Power

Direct Drive compressor for diving, featuring stainless steel construction, mounted on a black base, showcasing high-efficiency design for breathability and performance.

AC – 110 / 220 AND 60 / 50 Hz Available

The Express Diver 2 & 3’s motor/compressor is mounted on a King starboard base with pre-drilled holes for an easy installation. Comes with 2.5 gal aluminum accumulator tank which ensures your divers have a full, effortless breathe of air every time even if drawing air at the exact time as their other fellow divers. All of the components connect easily together with our patented QRS fittings.

OEM: CAD Drawings available upon request. Please send us an email request.

BIAS System Layout

Finishing Touches

Every Built In Air System Should Have

Thru Hull Outlet – Basic

Hand holding a red and yellow fresh air intake fitting for diving equipment, connected to a boat with a dark water reflection and palm trees in the background.

Level Winding E-Reel

Yellow air hose reel with coiled hose, mounted on a metal base, surrounded by various cables and connections, illustrating components of Brownie’s Integrated Air System for diving.

SS Hawse

SS Hawse fitting with attached yellow and red air hose, designed for Brownie’s Integrated Air System (BIAS) to enhance diving experiences.

Fresh Air Intake

Keep your compressor quietly and neatly tucked away while drawing fresh air from the surface or an air conditioned cabin. Below are your options.

Fresh Air Intake

Keep your compressor quietly and neatly tucked away while drawing fresh air from the surface or an air conditioned cabin. Below are your options.

Fresh Air Intake – Clam Shell

Fresh air intake clam shell for diving systems, featuring a polished chrome outlet, integrated into a boat's structure, surrounded by lush greenery.

Fresh Air Intake – Socket with Dive Flag

Fresh Air Intake system with compressor, Brownie's logo, and diver's flag on a boat, illustrating innovative diving equipment.

Fresh Air Intake – Socket

Boat deck featuring a yellow fresh air intake hose, Thru Hull Outlet, and a clean, modern design, showcasing components relevant to Brownie’s Integrated Air System (BIAS) for diving convenience.

New Build or Refit Support

From the conception of a new boat to a refit of a “new to you” boat, Brownie’s THIRD LUNG™ can help achieve your dream dive boat.

Our support includes:

  • CAD Foundation plans available for each system.
  • Our Brownie’s THIRD LUNG™ engineers will work directly with your boat builder to ensure desired placement of components are secured.
    Customized configurations specific to your boats design.
  • Create your own personalized “Dive Boat.”
  • Add value to your boat with specialized OEM equipment.
  • Manufacturer Warranty.
Top view diagram of Brownie’s THIRD LUNG™ fresh air intake socket with labeled mounting holes for installation on dive boats.
Back view illustration of Brownie's THIRD LUNG™ fresh air intake socket with multiple air supply connections, highlighting its design for dive boat integration.
Right view illustration of Brownie’s THIRD LUNG™ fresh air intake socket, featuring dual battery compartments and pre-drilled mounting base for easy installation in dive boats.

B.I.A.S. Foundation Plan

B.I.A.S. Foundation Plan

Mounting Base Plate

The system comes with a 0.75” King Starboard TM base plate with 4 pre-drilled mounting holes.

Use the 4 pre-drilled holes in the base plate to securely mount the unit.
The unit should not be operated if each bolt is not properly fastened to the vessel.
1⁄4 – 20 Machine Screw Recommended

Mounting Location

The installation area should be dry and well ventilated. If breathable air is not available while the compressor is running, Brownie’s recommends running a fresh air intake to a clean air source.

Electrical Wiring

The unit has a Red (+) and Black (-) cable coming from the Sterling Battery to Battery charger. The person installing the unit must connect these wires directly to the boats house batteries. The unit also has a smaller black and yellow cable used for the optional explanation of both systems can be found in the user manual.

Adding cable:
Less than 5ft – 4 Gauge
Greater than 5ft – 2 Gauge

Base plate diagram with dimensions, indicating a 12-inch square design, featuring specifications for mounting holes and size details relevant to Brownie’s THIRD LUNG™ integrated air system installation.

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The Sea LiOn™ is the first in its class and leader in:

Innovation in lithium-ion battery technology has advanced to the point where Brownie’s THIRD LUNG™ could modify its current system to adopt the lighter, more powerful lithium-ion batteries.

Battery icon representing lithium-ion technology for Brownie’s THIRD LUNG™ diving systems, emphasizing innovation and long-lasting power.
Battery icon representing lithium-ion technology for Brownie’s THIRD LUNG™ diving systems, emphasizing innovation and long-lasting power.

1. Long Lasting Battery

ANY battery-powered diving system that supports 3 divers up to 3 hours
Icon representing scuba diving technology, highlighting features of Brownie’s Integrated Air System (BIAS), emphasizing speed and efficiency in underwater breathing support.
Icon representing scuba diving technology, highlighting features of Brownie’s Integrated Air System (BIAS), emphasizing speed and efficiency in underwater breathing support.

2. Speed Technology

Variable Speed Technology (VS) that responds to diver breathing demands
Diving icon representing Brownie’s THIRD LUNG™ air systems, highlighting innovative lithium-ion battery technology for enhanced diving experiences.
Diving icon representing Brownie’s THIRD LUNG™ air systems, highlighting innovative lithium-ion battery technology for enhanced diving experiences.

3. Supports 3 Divers!

ANY Battery-powered system that supports 3 divers!
Diving icon depicting a diver with the number 4, representing Brownie’s THIRD LUNG™ support for up to four divers in innovative battery-powered air systems.
Diving icon depicting a diver with the number 4, representing Brownie’s THIRD LUNG™ support for up to four divers in innovative battery-powered air systems.

4. Supports 4 Divers!

ANY Battery-powered system that supports 4 divers!