HMCS Preserver

Canada is the country of registry for 633 vessels in this directory. The most common class under that flag is vessels this registry holds no type classification for (404 ships), and the median vessel measures 1,800 GT. Browse every ship flagged Canada.

Narrowing to both dimensions at once, this registry holds 13 naval / patrols flying the Canada flag.

HMCS Preserver was built in 1970, making it 56 years old. It is one of 336 hulls in this registry delivered that year, a cohort whose median tonnage is 2,669 GT. Across the whole of the 1970s the registry holds 17,331 vessels, median 2,774 GT. The median build year across the entire registry is 1995.

The registry attributes 3 vessels to Saint John Shipbuilding, with a median tonnage of 13,105 GT, delivered between 1969 and 1982. See the rest of that yard’s output.

At 172.0 m overall, HMCS Preserver is 85.5 m longer than the 86.5 m median for naval / patrols on record, with a beam of 23.0 m and a draft of 10.0 m.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 6918546 this registry holds 8 other vessels, whose median build year is 1969 and which range from 1968 to 1970. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1970.

Its IMO number, 6918546, carries its own check digit. The first six digits are weighted seven down to two and summed — 6×7 + 9×6 + 1×5 + 8×4 + 5×3 + 4×2 = 156 — and the last digit of that total, 6, must equal the seventh digit, 6. It does, so this number is well formed.