FSCU → Florens · lessor prefix
FSCU Container Prefix — Florens (Leasing)
Florens is the leasing arm of the COSCO group, running a fleet of nearly four million TEU from Hong Kong — some of it leased to third parties, some circulating inside COSCO’s own services.
Two codes are registered plainly to Florens; a third Florens-registered code is treated as COSCO fleet equipment and covered on the COSCO pages.
4 letters + 7 digits, printed on the doors
FSCU check digit: worked example
F | S | C | U | 3 | 6 | 6 | 3 | 0 | 1 |
|---|---|---|---|---|---|---|---|---|---|
| 16 | 30 | 13 | 32 | 3 | 6 | 6 | 3 | 0 | 1 |
| ×1 | ×2 | ×4 | ×8 | ×16 | ×32 | ×64 | ×128 | ×256 | ×512 |
| 16 | 60 | 52 | 256 | 48 | 192 | 384 | 384 | 0 | 512 |
Sum 1904 → 1904 mod 11 = 1 → check digit 1 → FSCU 366301-1
Florens prefix family
| Prefix | FSCU (this page) FCIU |
|---|
Prefix register verified against two independent sources on 2026-08-03.
Owner vs operator: the Florens case
Florens boxes often ride COSCO ships, but the register entry stays a lessor entry — track with whichever line issued your bill of lading.
Frequently asked questions
Who owns the FSCU container prefix?
FSCU is registered to Florens, a container leasing company (lessor) — the BIC register lists it together with FCIU, but the boxes sail in other lines' fleets.
Which line do I track a FSCU container with?
Not with Florens — a FSCU box is leased, so the tracking data lives with the shipping line named on your booking confirmation or bill of lading; open that line's tracker and paste the FSCU number there.
Is FSCU 3663011 a valid container number?
Yes — FSCU 366301-1 passes ISO 6346 validation: the weighted letter-and-digit sum for FSCU366301 leaves remainder 1 mod 11, giving check digit 1. The worked table for this FSCU example is on this page.
Is FSCU a shipping line prefix or a leasing company prefix?
FSCU is a leasing-company (lessor) prefix — Florens owns the steel box, while a shipping line operates it, which is why owner and tracker differ.