Flag state rankings

Two views: by registry-published vessel count (the official figure each flag administration reports), and by Seafarer Index indexed ship count (a sample of 1000 vessels currently catalogued here, biased toward well-known operators). Compliance posture — Paris MoU, Tokyo MoU, MLC ratification, and ITF Flag of Convenience designation — shown alongside. Methodology: /sources.

By registered ship count (registry-published)

#	Flag	Ships	DWT	Paris MoU	Tokyo MoU	FoC
1	Indonesia	14,000	30	not-listed	white	—
2	Panama	8,000	228	white	white	FoC
3	China	5,500	90	white	white	—
4	Singapore	4,700	126	white	white	—
5	Liberia	4,600	196	white	white	FoC
6	Marshall Islands	4,200	185	white	white	FoC
7	United States	3,600	12	white	white	—
8	Hong Kong	2,700	130	white	white	—
9	Japan	2,700	33	white	white	—
10	Russia	2,500	12	grey	grey	—
11	Malta	2,400	95	white	white	FoC
12	Norway	2,000	55	white	white	—
13	South Korea	1,900	20	white	white	—
14	Cambodia	1,900	10	black	black	FoC
15	Turkey	1,800	18	white	white	—
16	Vietnam	1,800	9	not-listed	grey	—
17	Bahamas	1,700	78	white	white	FoC
18	Saint Vincent and the Grenadines	1,700	12	grey	grey	FoC
19	India	1,600	14	not-listed	white	—
20	Malaysia	1,600	15	not-listed	white	—
21	Italy	1,500	20	white	white	—
22	Greece	1,400	52	white	white	—
23	United Kingdom	1,300	22	white	white	—
24	Philippines	1,200	4	not-listed	white	—
25	Canada	1,200	4	white	white	—
26	Cyprus	1,100	42	grey	white	FoC
27	Antigua and Barbuda	1,100	15	white	white	FoC
28	Togo	900	8	black	not-listed	FoC
29	Taiwan	800	8	not-listed	white	—
30	Denmark	700	22	white	white	—

By indexed fleet (Seafarer Index sample)

#	Flag	Indexed	Registry total
1	Liberia	54	4,600
2	Bahamas	23	1,700
3	Cayman Islands	21	200
4	Malta	19	2,400
5	Hong Kong	18	2,700
6	Norway	16	2,000
7	United Kingdom	15	1,300
8	Panama	10	8,000
9	Russia	10	2,500
10	Singapore	7	4,700
11	Denmark	7	700
12	France	7	400
13	Malaysia	6	1,600
14	Marshall Islands	5	4,200
15	Japan	5	2,700
16	Bermuda	5	250
17	United States	5	3,600
18	Saudi Arabia	5	300
19	Iran	5	400
20	Taiwan	5	800
21	Italy	4	1,500
22	Germany	4	600
23	Netherlands	4	700
24	Greece	3	1,400
25	Qatar	3	100
26	Turkey	2	1,800
27	Cook Islands	2	200
28	Venezuela	2	200
29	Sweden	2	400
30	China	1	5,500