Certified marine penetration systems · Made in Italy ·

Fire-rated and watertight exhaust penetration for ships and offshore

Hell-Sea is the only exhaust penetration in the world certified for 2 bar watertight integrity and A-60 fire protection at the same time. Delivered pre-assembled, installed with a single weld, and type approved by RINA and the US Coast Guard. Our compact, single-weld design reclaims machine-room space and cuts installation time compared to traditional solutions.

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How to pass a hot pipe through a fire-rated, watertight division

Certifications

MED A60RINALR ISO 9001USCGSOLAS II-2/9

MED A60

Certified to withstand
1,000 °C for 60 minutes

MED A60 CertifiedRINA ApprovedLloyd's Register ISO 9001US Coast GuardSOLAS II-2/9 CompliantWatertight 2 bar / 60 minMade in ItalyDN32–DN1000Pre-Assembled Kit1,000 °C / 60 minMED A60 CertifiedRINA ApprovedLloyd's Register ISO 9001US Coast GuardSOLAS II-2/9 CompliantWatertight 2 bar / 60 minMade in ItalyDN32–DN1000Pre-Assembled Kit1,000 °C / 60 min

Hell-Sea product range

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Standard Products

Kit Standard

Certified penetration for every vessel

Designed for any exhaust pipe at high temperature. Compact and easy to install, it reduces heat dispersion on the surrounding surface by up to 90%. Delivered pre-assembled, one weld, certified. Delivers A60 fire resistance up to 1,000 °C for 60 minutes.

MED A60 CertifiedWatertight 2 bar for 60 minDN32 to DN1000

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Zero Welding

Fire RatingMED A60, resistant to 1,000 °C for 60 min

Watertight2.00 bar (20 m) for 60 min

DiameterDN32–DN1000

Kit Slim

Flangeless install, zero welding

Designed for exhaust pipe lines without pre-existing flanges. The V-Band clamp allows installation on any pipe type with zero welding and minimal footprint. Delivered pre-assembled, certified, ready to fit in a single operation. Delivers A60 fire resistance up to 1,000 °C for 60 minutes. Available for DN32 to DN1000.

V-Band connectionNo welding requiredAny pipe type

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Rotary Flange

Fire RatingMED A60, resistant to 1,000 °C for 60 min

Watertight2.00 bar (20 m) for 60 min

DiameterDN32–DN200 (no surcharge); larger on request

Kit Rotary

Rotating flange for faster exhaust alignment

Designed for exhaust pipe lines where the outlet angle is not fixed in advance. The rotary flange turns freely on the passage body, so the fitting adapts to the exhaust pipe run. Delivered pre-assembled, certified. Delivers A60 fire resistance up to 1,000 °C for 60 minutes. Available for DN32 to DN200 at no extra cost; larger diameters on request.

Rotary flange360° free alignmentDN32 to DN200, no surcharge

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Curved Pipes

Fire RatingMED A60, resistant to 1,000 °C for 60 min

Watertight2.00 bar (20 m) for 60 min

DiameterDN32–DN1000

Kit Curve

Certified penetrations for curved runs

Designed for curved exhaust pipe runs, DN32 to DN1000, with an optional V-Band connection that minimises flange volume and removes welding entirely. Compact and easy to install in a single operation. Delivers A60 fire resistance up to 1,000 °C for 60 minutes.

Curved pipe supportV-Band optionalDN32 to DN1000

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Stainless 316L

Fire RatingMED A60, resistant to 1,000 °C for 60 min

Watertight2.00 bar (20 m) for 60 min

DiameterDN32–DN1000

Kit Inox

316L stainless for corrosive environments

Designed for the most corrosive marine environments. Full 316L stainless steel construction, watertight to 2.00 bar for 60 minutes, with superior corrosion resistance. Delivered pre-assembled, one weld, certified. Delivers A60 fire resistance up to 1,000 °C for 60 minutes. Compatible with aluminium hull applications.

316L Stainless SteelCorrosion resistantMED A60 Certified

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Dual Pipe

Fire RatingMED A60, resistant to 1,000 °C for 60 min

Watertight2.00 bar (20 m) for 60 min

Pipes2 in 1 fitting

Kit Binocular

Two exhaust lines, one certified fitting

Designed for two exhaust lines through the same bulkhead. Reduces installation space and welding time by up to 50% compared to fitting two separate kits. Delivered pre-assembled, one weld, certified. Delivers A60 fire resistance up to 1,000 °C for 60 minutes. Ships as a single certified structure, no separate kits, no duplicated hardware.

Dual pipe passage~50% space savingMED A60 Certified

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Special Products

Special

Fire RatingA60 / 60 min

DiameterDN32–DN250 (custom on request)

IP RatingIP66

Emergency Hatch

Certified emergency generator access

The Hell-Sea Emergency Generator Hatch is a safety system designed for exhaust gas pipe lines coming out on the main deck. The Hell-Sea passage system is placed inside the hatch box, and the door can be automatically opened using a certified IP66 solenoid. Available for a diameter range from DN32 to DN250, custom diameters available on request.

MED A60 CertifiedIP66 ratedAutomatic opening

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RINA Type Approved production

Every Hell-Sea penetration kit is manufactured in-house under RINA Type Approval. Certified fire and watertight resistance, verified at the source, no third-party testing required.

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One certified system for every installation requirement

The only exhaust penetration system that delivers A60 fire rating, watertight integrity to 2 bar for 60 minutes, and a compact, easy-to-install profile, all in a single pre-assembled unit.

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Kits

From flangeless V-Band kits to dual-pipe binocular fittings, one certified system family engineered for every installation scenario.

1 weld

Installation

Traditional installations require days of skilled labour. Hell-Sea ships pre-assembled. One welding operation. Done.

Type Approvals

MED A60, RINA, USCG. Made under Lloyd's Register ISO 9001.

DN1000

Max Diameter

From a DN32 superyacht exhaust to a DN1000 FPSO generator stack, the same certified solution scales across the entire range.

Field documentation