


SDT HATCHecker Ultrasonic Hatch Cover Tightness Test Kit
The SDT HATCHecker is an ultrasound solution designed to test the integrity of vessels for weathertightness. Use HATCHecker to pinpoint the exact location of leaks in hatch covers, doors and windows, and confirm that hatch covers are weathertight and compliant with the ruling regulations.
The HATCHecker works with SDT's ergonomic Flexible Sensor and the T-Sonic9 ultrasonic transmitter. Place the transmitter inside the hold, close the hatch, and scan the seals from outside: wherever the seal leaks, ultrasound escapes and the receiver picks it up.
Hatch cover testing and reporting with SHERLOGReporter
- Create a survey for a specific ship and type of hatch cover
- Perform the on-site functional test and log the results
- Mark leaky areas, spot or linear, on dedicated hatch cover, window or door layouts
- Attach photographs to each leak site
- Sync the survey to the SDT web platform and share the final report with principals or colleagues in real time
Complete Kit
The HATCHecker kit includes:
- HATCHecker ultrasound receiver
- Flexible Sensor
- T-Sonic9 ultrasonic transmitter (9 transducers, remote control, adjustable volume, 6 AA batteries)
- 25 dB NRR Peltor HQ headset

Specifications
| Function | Ultrasound measurement device |
|---|---|
| Display | 160 × 128 pixel color OLED |
| Response time | < 9 ms |
| Keyboard | 5 function keys |
| Measurement channel | 1 channel via 7-pole LEMO connector |
|---|---|
| Measuring range | -6 to 99.9 dBµV (reference 0 dB = 1 µV) |
| Resolution | 0.1 dBµV |
| Measurement bandwidth | 39.6 to 40.1 kHz |
| Signal amplification | +30 to +102 dB in 6 dB steps |
| Minimum sensitivity | -31 dB (@ 40 kHz, 0 dB = 1 V/µbar), equal to a flow rate down to 10⁻³ std. cm³/s |
| Audio amplification | 5 positions in 6 dB steps |
|---|---|
| Maximum output | +83 dB SPL with SDT headset |
| Headset | 25 dB NRR Peltor HQ headset |
| Operable with | SDT-supplied headset only |
| Battery | 2 × AA |
|---|---|
| Battery life | 7 hours |
| Housing material | ABS |
|---|---|
| Housing dimensions | 158 × 59 × 38.5 mm (6.22 × 2.32 × 1.51 in) |
| Weight | 164 g (5.78 oz) |
| Electrical connector | 7-pole female LEMO |
| IP rating | IP42 |
| Operating temperature | -10 to +50 °C (14 to 122 °F) |
| Transducers | 9 |
|---|---|
| Control | Remote control, adjustable volume |
| Battery | 6 × AA |
Shipping
| Carriers | UPS or FedEx for domestic orders; FedEx for international orders |
|---|---|
| Shipping cost | Calculated automatically at checkout for US orders. International orders require a complete ship-to address with postal code. |
| Freight terms | FOB shipping point, freight prepaid. Title passes to the buyer at the vendor's dock. |
| Hazardous items | Epoxy adhesives, batteries and paint markers cannot ship by air freight |
| International | Shipping fees do not include taxes, tariffs or duties |
Returns
| Return window | 7 calendar days from delivery. Contact us before returning any item. |
|---|---|
| Condition | New, unaltered and unused. Special and custom orders are not returnable. |
| Restocking fee | 15% on non-defective items that are not being exchanged |
| Full policy | Refund / Return Policy |
See our Shipping & Billing Terms for how estimated shipping is charged, and our Refund / Return Policy.
Questions about shipping on this item? Call (214) 238-0493 or contact us.

