Cygnus Hatch Sure

Ultrasonic Tightness Tester

This portable ultrasonic leak detector is designed to locate leaks and identify seal failures in any closing appliances or compartments, such as weathertight doors on marine vessels or watertight doors (WTDs) or windows on any structures from offshore oil & gas platforms to transportation vehicles.

Evaluate watertight integrity of seals using Ultrasonic Testing (UT) which provides a simple and reliable method of checking seals of any closing appliances or structures. The Cygnus Hatch Sure system consists of a battery powered transmitter, a lightweight receiver and telescopic extension inspection microphones. The powerful transmitter with 19 ultrasound emitters (40 kHz) distributes an omni-directional sound field which uniformly fills the areas under test. The receiver detects any ultrasound that gets through any gaps in the closed door or compartment and displays the sound energy level, identifying the location of leaks or damaged seals quickly and reliably.

Key Features:

  • Ideal for inspecting watertight and weathertight seals of doors or any closing appliances
  • Pinpoint the exact location of leaks and help assess seal degradation
  • 6 adjustable power levels allowing the unit to be used in various sizes of areas
  • Easy and quick to operate, with minimal training
  • Inspections can be carried out without the need to clear the area
  • Lightweight 3.8 kg (8 lbs) and portable in a rucksack-style carry case
  • Digital calibration controls
  • Open Hatch (OH) value and sound level in Decibels (dB) are simultaneously displayed
  • Receiver supplied with neck and waist straps for hands-free use
  • Transmitter supplied with a sling & 4 anchor points allowing it to be lowered into position
  • ABS type approved and accepted by P&I clubs.

Hatch Sure Receiver

Size110 x 185 x 45 mm (4.4 x 7.3 x 1.8 inch)
Weight500 g (17 oz) (inc. batteries)
Power9v PP3 battery – 2 x MaxE
Rechargeable batteries supplied
Battery Life4 – 5 hrs continuous with MaxE rechargeable battery
8 – 9 hrs continuous with Alkaline battery
ProtectionIP65 (IP66 in soft-pouch)
Frequency40.000 KHz, +/- 200 Hz Bandwidth
EnclosureABS plastic with orange shock-absorbing outer boot
Outdoor all weather soft-pouch with mounted belt strap
Temperature RangeOperating: -20oC to 50oC (-4oF to 122oF)
Storage: -10oC to 60oC (14oF to 140oF)
Warranty3 years

Hatch Sure Inspection Microphone

Size240 x 12 x 15 mm (9.4 x 0.47 x 0.6 inch) (with rubber sleeve fitted)
Warranty6 months
Quantity2 x flexible inspection microphones supplied

Hatch Sure Telescopic Extension

SizeExtended length: 1.215 m (4 ft)
Collapsed length: 0.4 m (16 inch)
Weight300 g (10 oz)
1 year

Hatch Sure Transmitter

Size120 x 150 x 90 mm (4.7 x 5.9 x 3.5 inch)
Weight680 g (24 oz) (inc. batteries)
Power12 x Rechargeable MaxE 2100 mAh supplied with kit (alternatively 6 x AA batteries)
External 12-24 v DC power input socket (1 amp)
Battery Life4 hours with 2100 mAh MaxE batteries
Battery ChargerA 6 cell charger is supplied
100 – 240 v AC 50-60 Hz supply
Charge time is approx. 3 hours
ProtectionIP40 in soft-pouch with emitters exposed (normal use)
IP42 in soft-pouch with cover flat secured (storage)
Frequency40.000 kHz, +/- 80 Hz Bandwidth Frequency modulated
Elements19 x 16 mm (0.63 inch) diameter 40 KHz ultrasound emitters
Max. Power130 dB (SPL)
Output6 selectable pre-set power levels – full power
5 selectable lower outputs in 11 dB steps
EnclosureABS plastic
Padded soft-pouch with protective weather cover and 4 points for attaching rope for lowering into holds
Temperature RangeOperating: -20oC to 50oC (-4oF to 122oF)
Storage: -10oC to 60oC (14oF to 140oF)
ComplianceCE, BS EN 60945:2002 (Maritime navigation and radio communication equipment and systems – General requirements – Methods of testing and required test results)
EnvironmentCE, UKCA, RoHS
Warranty3 years


Weight5 kg

4 reviews for Cygnus Hatch Sure

Wagner C.

Sep 30, 2015 11:30 AM

I’m pleased to inform you that this month I completed the one hundred and twentieth vessels inspection and I’m entirely satisfied with the Cygnus Hatch Sure equipment.

Ammar M.

Apr 20, 2017 11:29 AM

Item was used with total satisfaction, we shall keep in touch for further purchases soon.

Orçun Ç.

Dec 26, 2017 11:31 AM

Device is working very well, we have used many devices but this one is far ahead from others.

Tony D.

Mar 31, 2021 11:32 AM

A super piece of kit, and our go to detector when performing yacht hatch and door ultrasonic leak detection testing.

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