Netwave PT9 NINETY Underwater Locating Device

It was the first – and is now the first choice 90-day ULD (Underwater Locating Device). PT9 NINETY meets the requirements of IMO MSC.333(90) and is a direct replacement for existing ULDs, as certified by BSH.   (S)VDRs which are pre MSS.333(90), can be fitted with a PT-9 ULD

Features

  • Corrosion-resistance guaranteed
  • The worldwide available ULD
  • The PT9 NINETY power source
  • The PT9 NINETY Periphery, compatible with all
    PT9 ULDs

Discover more in the TECHNOLOGY tab below

Dimensions Weight

Length 100 mm (3.92 inches)
Diameter 33 mm (1.3 inches) same as PT9 C-Proof
Weight 187 g (6.6 ounces)

Operating Details

Actuation Automatically by both, fresh and salt water, at all depths from 0.15 m (0.5 ft) to 6096 m (20000 ft) within 4 hours after immersion
Operating Depth Surface to 6096 m (20000 ft)
Operating Temperature –2°C (28°F) to
+38°C (100°F)
Radiation Pattern 80% of a spherical pattern
Operating Frequency 37.5 ± 1 kHz
Pulse Length 9.0 ms minimum
Repetition Rate 0.9 pulse/s minimum
Operating Life 90 days

Acoustic Outputs on Activation

Initial Operation 106 N/m2
(1060 dyne/cm2) r.m.s. (during the pulse) pressure normalized to 1 metre range, that is, at a level of 160.5 dB vs 1 μPa at 1 metre
Immediately after 90 days continuous operation 70 N/m2 (700 dyne/cm2) r.m.s. (during the pulse) pressure normalized at 1 metre range, that is, at a level of 157 dB vs 1 μPa at 1 metre
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