RFA Tidesurge

At 29,324 gross tons, RFA Tidesurge is the 20,332nd largest of the 84,014 vessels in this registry that report a tonnage. The median across that set is 5,994 GT, so this hull is about 4.9 times the typical vessel on record here. The largest measures 499,167 GT.

Among the 611 naval / patrols held here, it ranks 5th by tonnage — larger than 97% of that group. Their median tonnage is 1,325 GT, and the largest tenth begin at 23,606 GT. The flag most often flown by this group is United States (136 ships). The yard that appears most often against it is Austal, with 33 hulls on record.

United Kingdom is the country of registry for 2,394 vessels in this directory, of which RFA Tidesurge is the 252nd largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (1,835 ships), and the median vessel measures 2,515 GT. Browse every ship flagged United Kingdom.

Narrowing to both dimensions at once, this registry holds 46 naval / patrols flying the United Kingdom flag, of which none is larger than RFA Tidesurge.

RFA Tidesurge was built in 2018, making it 8 years old. It is one of 1,246 hulls in this registry delivered that year, a cohort whose median tonnage is 18,960 GT; within it this ship is the 495th largest. Across the whole of the 2010s the registry holds 20,111 vessels, median 23,456 GT. The median build year across the entire registry is 1995.

The registry attributes 1,090 vessels to Hanwha Ocean, with a median tonnage of 84,214 GT, delivered between 1982 and 2025. See the rest of that yard’s output.

At 200.9 m overall, RFA Tidesurge is 114.4 m longer than the 86.5 m median for naval / patrols on record, with a beam of 28.6 m and a draft of 10.0 m.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 9655559 this registry holds 56 other vessels, whose median build year is 2013 and which range from 2011 to 2018. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 2018.

Its IMO number, 9655559, carries its own check digit. The first six digits are weighted seven down to two and summed — 9×7 + 6×6 + 5×5 + 5×4 + 5×3 + 5×2 = 169 — and the last digit of that total, 9, must equal the seventh digit, 9. It does, so this number is well formed.