टोंगा गर्त

The Tonga Trench constitutes the northern half of the Tonga-Kermadec subduction system, which extends 2,550 km (1,580 mi) between New Zealand and Tonga.

RV Horizon (1948), used as Auxiliary Fleet Tug USS ATA-180

Deep Submersible Support Vessel DSSV Pressure Drop

टोंगा गर्त छगू मू महासागरीय गर्त ख।