The new standard: PT9 Ninety

IMO resolution MSC.333(90): On ships which are built on or after July 1, 2014, underwater locating devices must ensure a regulatory transmission time of at least 90 days.

Minimum Performance Standards

• SAE AS8045A
• IEC 61996-1 (2013-05) Ed. 2.0
  This standard incorporates the applicable parts of the performance standards included in IMO Resolution MSC.333(90).

Dimensions

• Length 98mm (3,85 inch), Diameter 33mm (1,3 inch) same as PT9 C-Proof
• Weight: 187 g (6.6 ounces)

Power source

• Self-contained, lithium battery (field replaceable)
• Non restricted for transport (UN3091/PI970)

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