<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31355584</termId><termName>keels</termName><termType>PT</termType><termNote><![CDATA[ Main structural members running for and aft along the bottom of a ship or boat, to which the frame of the vessel is attached. ]]></termNote><termCreatedDate>2026-03-30 20:35:52</termCreatedDate><relation><relationType>UF</relationType><termId>31355585</termId><termName>backbone</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31355586</termId><termName>backbones</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31355587</termId><termName>keel</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31325084</termId><termName>watercraft components</termName><termType>PT</termType></relation><relation><relationType>NT</relationType><termId>31395608</termId><termName>fin keels</termName><termType>PT</termType></relation></term>  </Zthes>