What is the Concordia's rear air cell?

It is an interchangeable air cell mounted on the operator's back, concentrating lift at the highest point of the body. Unlike traditional jackets with a front chamber, the rear cell frees the chest and arms and allows the operator to freely choose their buoyancy in the water.

What capacities does the Concordia's air cell have?

The cell is available in 5 interchangeable sizes: 20, 27, 22/35, 40 and 40+40 litres. The outer shell is in Hypalon neoprene 1500, the same fabric as HazDry drysuits; the inner bladder is in Soltane F/B 400®.

Can the operator choose negative, neutral or positive buoyancy?

Yes. The operator controls buoyancy with full autonomy via the piston inflator: negative for bottom stability during heavy work, neutral for operational movement, positive for ascent and surface.

What materials does the Concordia use?

Harness and rear air cell in Hypalon neoprene 1500, the same fabric as HazDry anti-pollution drysuits, Soltane F/B 400® bladder and AISI 316 stainless steel for triangle, D-rings and S.T.A. Configurable backplate in steel, aluminium or carbon.

Is the Concordia compatible with single and twin tanks?

Yes. Brackets for single and twin tanks are included in the standard configuration, allowing use with a single or double tank without structural modifications.

What is the price of the OTS Concordia harness?

Price is on request, reserved for professional operators. Contact milpro@divesystem.com for a personalised quote based on air cell, backplate and quantity.

DiveSystem® · Made in Italy since 1993

OTS Contractor Concordia

Name: OTS Contractor Concordia
Brand: DiveSystem

The BCD harness with a rear air cell that leaves buoyancy in the operator's hands. Built for real work.

Imbraco OTS Contractor Concordia · GAV a sacco posteriore DiveSystem

Interchangeable rear air cell, from 20 to 80 litres
Negative, neutral or positive buoyancy chosen by the operator
Harness and air cell in Hypalon neoprene 1500, the same fabric as HazDry drysuits
TIG-welded stainless steel triangle and AISI 316 D-rings · Made in Italy

Price On request

Request quote → Contact us

Average lead time: 2 weeks

This lead time is indicative and not binding. Reserved production slots are available for urgent orders; the actual delivery time will be confirmed by our team at the time of order. For urgent requests, contact us.

Configurations

Every side, in every configuration.

The Concordia works with a single tank or with twins, with the same harness and the same rear air cell. Here you see it from every side in both configurations. Click any photo to see it full screen.

Single tank

Twin tanks

OTS Concordia harness with rear air cell in twin tank configuration

Photographs of the actual product. Configurations shown are indicative: cell capacity, backplate and webbing remain configurable.

Operatore con imbraco Concordia durante il cantiere di recupero del relitto Costa Concordia

Genesis

Born on the wreck of the Costa Concordia

The OTS Contractor Concordia was born in the field, from the real needs of the operators engaged in the salvage operation of the Costa Concordia wreck, off Giglio Island. The worksite demanded long shifts at mid-water, where full autonomous buoyancy control was not a detail but an operational necessity. That experience gave rise to the Concordia's rear air cell, built to give the operator complete freedom of adjustment at every stage of the intervention.

Operatore con imbraco Concordia: il sacco aria è posizionato sulla schiena

The Concordia advantage

The air volume sits behind you. Buoyancy is your call.

Unlike traditional jackets, the Concordia's air sits in a rear air cell. The operator controls buoyancy with full autonomy: negative to bear down on the bottom, neutral to move, positive to ascend. Chest and arms stay free, the volume stays behind, freedom of movement is total.

Buoyancy control

One vest, three ways to work

The rear air cell concentrates lift where it belongs and lets you decide how to sit in the water, moment by moment.

Negative

Bear down on the bottom. Absolute stability for heavy work, anchoring and tool use.

Neutral

Working trim. Move and operate effortlessly, suspended exactly where you need to be.

Positive

Ascent and surface under control. Instant lift when it matters.

Sistema posteriore Concordia: sacco aria, piastra inox e valvole di scarico

The rear system

The whole system, behind you

Rear air cell in double-sewn Hypalon neoprene 1500 over a Soltane F/B 400® bladder, backplate and counter-plate configurable in stainless steel, aluminium or carbon, and three overpressure and quick-exhaust valves. The piston inflator with corrugated hose and anti-pull wire completes an assembly built for years of service.

Materials

Materials, no compromise

Every component is chosen to endure: high-tenacity fabrics, stainless steels and reliable bladders, combined for years of demanding service.

Hypalon Neoprene 1500

Harness with reinforced seams: the same fabric as HazDry anti-pollution drysuits.

Air Cell in Hypalon 1500

The rear air cell is Hypalon neoprene 1500 as well, identical to the harness.

Soltane F/B 400®

Inner polyurethane bladder for reliable air retention.

AISI 316 Stainless Steel

TIG-welded triangle and D-rings: every load point is corrosion-proof.

Configurable Backplate

Backplate and counter-plate in steel, aluminium on request or carbon optional.

Configuration

An air cell for every mission

The rear air cell is interchangeable and available in five capacities, balancing lift and bulk to match the type of intervention and the equipment carried.

22·35

40+40

Capacity in litres · outer cell in Hypalon neoprene 1500, inner Soltane F/B 400®

Dettaglio Concordia: cinghia bombola con fibbia in acciaio inox sul sacco posteriore

Details

Engineered down to the detail

Harness in Hypalon neoprene 1500 with reinforced seams, oversized TIG-welded stainless steel triangle and AISI 316 D-rings. Four Heavy Duty Hypalon pockets, stainless steel buckles and grommets, and brackets for single and twin tank: every contact point is built for intensive use.

Cucitura dell'imbraco OTS nello stabilimento DiveSystem in Toscana

Manufacturing

Sewn and welded, one by one

Every harness passes through our operators' hands: cutting, high-frequency welding of the Hypalon fabric and reinforced stitching of the load points. No automated line, no subcontractor: control stays where the product is born.

Produzione interna DiveSystem · stabilimento toscano

Manufacturing

We build in-house what we deliver

Every Concordia harness is designed, built and tested in-house at DiveSystem's Tuscan facility. Total control over materials, seams and custom configurations.

From raw material to finished product.

B2B Pricing

On request

Excl. VAT · On request · Custom configurations available

Pricing is reserved for professional operators. Contact us for a personalised quote based on air cell, backplate and quantity.

Request a quote → Contact us

Average lead time: 2 weeks

Frequently asked questions · OTS Concordia Harness

What is the Concordia's rear air cell?: It is an interchangeable air cell mounted on the operator's back, concentrating lift at the highest point of the body. Unlike traditional jackets with a front chamber, the rear cell frees the chest and arms and allows the operator to freely choose their buoyancy in the water.
What capacities does the Concordia's air cell have?: The cell is available in 5 interchangeable sizes: 20, 27, 22/35, 40 and 40+40 litres. The outer shell is in Hypalon neoprene 1500, the same fabric as HazDry drysuits; the inner bladder is in Soltane F/B 400®.
Can the operator choose negative, neutral or positive buoyancy?: Yes. The operator controls buoyancy with full autonomy via the piston inflator: negative for bottom stability during heavy work, neutral for operational movement, positive for ascent and surface.
What materials does the Concordia use?: Harness and rear air cell in Hypalon neoprene 1500, the same fabric as HazDry anti-pollution drysuits, Soltane F/B 400® bladder and AISI 316 stainless steel for triangle, D-rings and S.T.A. Configurable backplate in steel, aluminium or carbon.
Is the Concordia compatible with single and twin tanks?: Yes. Brackets for single and twin tanks are included in the standard configuration, allowing use with a single or double tank without structural modifications.
What is the price of the OTS Concordia harness?: Price is on request, reserved for professional operators. Contact milpro@divesystem.com for a personalised quote based on air cell, backplate and quantity.

Technical Specifications

Harness & Structure

Harness in Hypalon neoprene 1500 with reinforced seams
Oversized TIG-welded stainless steel triangle on top
AISI 316 stainless steel D-rings

Rear Air Cell

Interchangeable: 20, 27, 22/35, 40 or 40+40 litres
Outer shell in Hypalon neoprene 1500, as on HazDry drysuits
Inner bladder in Polyurethane Soltane F/B 400®
Double-sewn outer cell for extreme durability and resistance

Backplate & Webbing

Backplate and counter-plate in stainless steel · aluminium on request · carbon optional
S.T.A. in AISI 316 stainless steel · aluminium or carbon optional
Brackets for single and twin tank

Inflation & Valves

Traditional piston inflator
Corrugated hose with simple-exit elbow and inner anti-pull metal wire
3 overpressure and quick-exhaust valves
LP hose with quick bayonet connection

Pockets & Accessories

4 Heavy Duty Hypalon neoprene pockets (fixed or removable)
Plate protection cover
Pocket for shot-line plate

General

Colour: Red (Orange on request)
Made in Italy by DiveSystem

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The milpro team responds to quote requests, custom configurations and technical information for professional operators, public agencies and distributors worldwide.

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milpro@divesystem.com