Followup:
The relevant portion of the document in the Calibre epub editor looks like:
Code:
<p class="pcalibre p4">Honor stood in the observation dome on <i class="calibre5">Imperator</i>’s spine. Her flagship was inverted, and her eyes were dark and thoughtful as she gazed up at the white-swirled sapphire of the planet called Tschermak.</p>