The £40m package, made up of a £20m loan and a £20m grant, will go towards the estimated £110m cost of refurbishing the Breakwater.
Bydd y pecyn gwerth £40 miliwn, sy'n cynnwys benthyciad o £20 miliwn a grant o £20 miliwn, yn helpu gyda'r gost o ryw £110 miliwn i adnewyddu'r Morglawdd.