Gee that's harsh. Based on 90% of the deadweight tonnage of average Aframax tanker, you could fill it with approx 90,000 metric tons, which comes to about 658,000Bbls (of API33 oil).
If SSN produces at the forecast 1,050 boepd avg for next 12 months and 84% oil rate that's 306,000 Bbls.
With no further declines you could fill that puppy in a little over 2 years.