Dennett 165 Newton Auto/Manual Lifejacket with Harness UML - 165

This fully automatic lifejacket is designed to activate upon contact with water, providing 165N of...

Best current price£97.99from eBay

All Offers

2 offers from £97.99

View price history by clicking the chart icon.

eBayDennett 165 Newton Auto/Manual Lifejacket with Harness UML - Boat Fishing Safety
Free delivery in 1–3 days
£97.99
Visit shop

Product Information

Full details

The Dennett 165 Newton lifejacket is an essential safety device for offshore sailors, cruisers, and commercial mariners who require reliable buoyancy and hands-free operation. Its primary strength lies in its 165N of automatic buoyancy that ensures a stable, head-above-water position, though users must be diligent about checking the CO2 cylinder expiry date and rearming the mechanism after any water immersion.

All features

Model Part Number165
BrandDennett

Extended Product Information

FAQs

What does the '165 Newton' rating mean?

It refers to the amount of buoyancy provided. 165N is generally suitable for offshore use, providing enough lift to support an adult's head and shoulders even while wearing heavy foul-weather clothing.

Does the lifejacket work if I fall into the water and am unconscious?

Yes, the automatic water-contact activation will trigger the inflation, and the jacket is designed to turn most users into a face-up position.

How often should I inspect the lifejacket?

You should perform a visual inspection before every outing and a thorough service inspection at the start of every season.

Can I wash the lifejacket?

Yes, but you should remove the automatic firing bobbin first to prevent accidental inflation, and wipe down the outer cover with a damp cloth.

What is the purpose of the integrated harness?

The harness allows you to attach a safety tether, keeping you secured to the boat while moving across the deck in high seas or stormy weather.

Is the CO2 cylinder reusable?

No, once the CO2 cylinder has been fired, it is empty and must be replaced with a new 33g cylinder.

Troubleshooting

The automatic sensor indicator shows red

The sensor is likely expended or the cylinder is empty. Replace the CO2 cylinder and the automatic firing cartridge immediately.

Jacket feels uncomfortable or rides up during use

Ensure the waist belt is cinched tightly against your body and verify that the crotch strap is securely fastened.

CO2 cylinder has passed its expiry date

Do not use the jacket. Purchase a compatible 33g rearming kit and replace the cylinder to ensure reliability.

Pros and Cons

Pros

  • High buoyancy rating for superior safety in offshore conditions
  • Ergonomic fit allows for full range of motion
  • Dual-mode operation provides redundant reliability
  • Integrated harness meets strict ISO 12401 safety standards
  • Crotch strap prevents jacket ride-up

Cons

  • Requires regular maintenance and checking of CO2 cylinder status
  • Automatic sensor can fire if accidentally submerged during washing
  • Bulkier than manual-only lifejackets
  • Requires rearming kit after deployment

Setup, Compatibility & Care

Before each voyage, perform a visual inspection of the CO2 cylinder to ensure it is tightly screwed into the mechanism and that the date of expiration has not passed. Check that the indicator light or visual tab on the UML mechanism shows green, indicating it is armed and ready. To maintain the lifejacket, rinse it with fresh water after exposure to salt spray and store it in a cool, dry, and well-ventilated area. Avoid storing it in direct sunlight or where it may be subject to high heat, as this can degrade the bladder material. If the jacket is deployed, the 33g CO2 cylinder must be replaced, and the paper bobbin in the automatic sensor needs a fresh rearming kit.

Price History

DatePrice
Visit shop