I know someone who did some research on this very topic several years ago.
Interesting read different conclusions. The article in Maritime Executive seems to focus only on the newer thorium reactor design and talks about new construction not refitting an existing cargo vessel even speculating that cruising speeds of 50 knots would further drop cost. Higher power density, reduced high level waste cost, and no fuel tanks increasing cargo space would seem to be positives. But then proposals by nuclear vendors are a bit rosy, the manpower projections for manpower needs of early plants was far below actual manning ("to cheap to meter")
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What was your grade? An "A" I would assume.