Cygnus Hatch Sure for Ships

Ultrasonic Hatch Cover Tester

The Cygnus ultrasonic hatch leak detector is ABS type approved and accepted by P&I clubs; it is designed specifically to perform quick and effective weathertightness tests on hatch covers and their coamings of dry cargo vessels. Using smart electronics that are extremely simple to operate, Hatch Sure will pinpoint the location and the extent of leakage with no fuss and no hose testing required.

Key Features of the Cygnus Hatch Sure Ultrasonic Hatch Cover Tester

  • Environmentally friendly – can be used in place of hose testing
  • Inspections can be carried out with cargo in place
  • Allows a rapid and thorough test of hatch cover weather tightness
  • Quick and easy to operate, with minimal training or assistance of other crew members
  • Lightweight 8 lbs (3.8kg) and is suitable to be hand-carried onto aircraft (in a rucksack-style carry case
  • The transmitter has 6 selectable pre-set power levels, that permit inspection of different sizes or types of cargo holds
  • Digital calibration controls
  • Open Hatch (OH) value and sound level in Decibels (dB) are both displayed
  • Receiver supplied with neck and waist straps for hands-free use
  • Transmitter supplied with sling & 4 anchor points which allows it to be suspended in cargo hold.

Locate Leaks in Hatch Covers (or Doors) with Accuracy

Purpose-built for weather tightness testing of cargo hatch covers, the Cygnus Hatch Sure ultrasonic leak detector can identify the exact location of leaks in coamings both quickly and accurately. Furthermore, the unit’s transmitter features adjustable power to suit different sizes or types of cargo holds as well as smaller areas such as cargo hold entrance hatches, inspection hatches, yacht and boat hatches.

Cygnus Hatch Sure Technology

Water ingress is one of the major sources of damage to cargo resulting in insurance claims.

Cygnus Hatch Sure provides a quick and highly effective way of evaluating hatch seals.

The system features a battery powered transmitter containing 19 ultrasound emitters (40 kHz). The emitters are arranged to produce omni-directional sound that is uniformly distributed throughout the entire cargo hold.

The receiver then displays the level of sound that passes through any gaps in the enclosed cargo hold – which enables the user to pinpoint leaks quickly and accurately.

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


The Hatch Sure kit is supplied in a shower-proof rucksack style soft carry case which can be worn on the back or carried. This allows the user to move about the vessel with both hands free allowing easy climbing or passage through access hatches. The case is sufficiently padded to protect its contents should it be dropped. There is plenty of room for additional items such as chalk, a small torch, a notepad etc.

The Hatch Sure kit contains the following items:

  • Hatch Sure receiver with protective case, neck and waist strap
  • Telescopic extension and cable
  • Two flexible inspection microphones
  • Neck band headphones
  • Hatch Sure transmitter with protective case and carry strap
  • Rechargeable batteries for the transmitter
  • Rechargeable batteries for the receiver
  • Charger for the rechargeable batteries
  • Operation manual
  • External DC power lead for the transmitter
  • Emergency microphone cable.
Weight5 kg

5 reviews for Cygnus Hatch Sure for Ships

Wagner C.

Sep 30, 2015 1:20 PM

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 1:20 PM

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

Orçun Ç.

Dec 26, 2017 10:00 AM

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

Tony D.

Jun 04, 2020 1:16 PM

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

Tony D.

Mar 31, 2021 1:15 PM

This is a super piece of kit, the Cygnus Hatch Sure ultrasonic hatch cover leak detector combined with our procedures and experience certainly helped in gaining Geo Therm Ltds aproval for service supplier status with LR and ABS.

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