<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31449414</termId><termName>external combustion engine-powered watercraft</termName><termType>PT</termType><termNote><![CDATA[ Describes watercraft powered by a heat engine that derives its heat from fuel consumed outside the cylinder. ]]></termNote><termCreatedDate>2026-03-30 21:01:01</termCreatedDate><relation><relationType>UF</relationType><termId>31449415</termId><termName>watercraft, external combustion engine-powered</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31425825</termId><termName>mechanically powered watercraft by power plant</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31465217</termId><termName>steamboats</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31465220</termId><termName>steamships</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31465223</termId><termName>naphtha launches</termName><termType>PT</termType></relation></term>  </Zthes>