<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31476615</termId><termName>autonomous underwater vehicles</termName><termType>PT</termType><termNote><![CDATA[ Unmanned underwater robots used for survey missions such as detecting and mapping submerged wrecks, rocks, and obstructions (with the use of sensors) that can be a hazard to navigation for commercial and recreational vessels. They complete these missions without operator control. For similar devices controlled by an operator remotely, use 'remote submersibles.' ]]></termNote><termCreatedDate>2026-03-30 21:08:21</termCreatedDate><relation><relationType>UF</relationType><termId>31476616</termId><termName>AUV</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31476617</termId><termName>autonomous underwater vehicle</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31465188</termId><termName>unmanned underwater vehicles</termName><termType>PT</termType></relation></term>  </Zthes>