<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">quadriremes</topic></authority><related type="broader"><topic>multilevel rowed watercraft</topic></related><related type="broader"><topic>warships</topic></related><variant type="other"><topic>quadrireme</topic></variant><variant type="other"><topic>quadriremis</topic></variant><variant type="other"><topic>tetrereis</topic></variant><variant type="other"><topic>tetreres</topic></variant> <note xml:lang="en"><![CDATA[ Ancient warships propelled by oarsmen grouped somehow into units of four on at least two levels; exact arrangement of oarsmen unknown. ]]></note></mads>