Lesson 3 · 16 min
Flag rules compared: ten registries side by side
Which flags approve lifeboat service firms themselves, which accept class approval, and which want a surveyor at the five-yearly test.
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The 2-minute primer
New to this? These 6 cards explain the lesson in plain words. Go through them first and the lesson will make sense.
Primer done.
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1/6Picture this
Same medicine, different countries
A doctor who moves abroad practises the same medicine. But one country accepts their old papers, another wants its own registration first, and some want a senior doctor watching at the start.
Lifeboat rules are like that. Every flag applies the same international rule, then makes its own choices on top.
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2/6The big idea
One rule, many local choices
The international rule leaves some choices to each flag. The two biggest are who approves the service firm, and who must watch the five-yearly test.
Some flags, like Panama, Liberia and the Bahamas, insist on their own approval of the firm. Others accept a firm approved by a class society. Some want a surveyor at every five-yearly test.
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3/6Words you'll meet
Five words, in plain English
- Flag
- the country a ship is registered in; its rules apply on board wherever the ship sails.
- Class society
- a private organisation that surveys ships and approves firms, often on the flag’s behalf.
- Marine notice
- a flag’s official letter to shipowners setting out its own extra rules.
- Witness
- to be present and watch a test, so someone independent can confirm it was done properly.
- Bulldog grip
- a U-shaped clamp for the end of a wire rope, which some flags no longer accept on lifeboat wires.
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4/6Why it matters
Sister ships can need different firms
Managers often book one firm for a whole port call. But if two sister ships fly different flags, the firm may be accepted on one and not the other.
Work done by the wrong firm, or without the surveyor the flag requires, may have to be done again. Flag notices also change often, so last year’s copy can mislead.
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5/6In this lesson
What you’ll be able to do
- Compare what ten major flags require for lifeboat service.
- Spot which flags insist on approving firms themselves.
- Know which flags want a surveyor at the five-yearly test.
- Find and read the current notice before planning the work.
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6/6Quick check
A firm has class approval only. Is that enough under every flag?
Right: flags such as Panama, Liberia and the Bahamas require their own approval of the service firm, so class approval alone is not enough there.
In plain words
Every flag applies the same IMO rule, MSC.402(96). But the rule leaves some choices to each flag, and the flags have chosen differently.
The biggest difference is who approves the service firm. Some flags insist on their own approval, with their own certificate and fee. Others accept a firm approved by a class society acting for them. A firm that is fine for a ship under one flag may not be allowed on a sister ship under another.
The second difference is who must watch the five-yearly test. Some flags want a class surveyor there every time. The UK wants its own surveyor or someone it appoints.
Flags also add their own rules on falls, wire grips, postponements and records. This lesson puts ten common flags side by side. Notices change, so treat every line as “as of October 2026” and open the current notice before planning.
Key points
- MSC.402(96) lets each flag authorise providers itself or accept providers authorised by other flags or their Recognized Organizations (MSC.402(96) §7.4.3).
- As of October 2026, Panama, Liberia and the Bahamas require their own authorisation of lifeboat service providers (MMC-258; SAF-005 §4.2; BMA MN 82 §5.2).
- Liberia requires the five-yearly work “in the presence of a class surveyor no matter who conducts it” (SAF-005 §4.1.4).
- The Marshall Islands requires five-yearly work “in attendance of RO Surveyor” (MN 2-011-37 §8.2.1).
- The UK accepts the OEM, OEM-approved firms and firms authorised by a UK-authorised RO, and has the five-yearly dynamic test witnessed by the MCA or its appointee (MGN 555 Amendment 1; MGN 560 Amendment 2).
- Liberia and the Marshall Islands do not accept bulldog grips on primary load-bearing wire terminations (SAF-005 §5.3; MN 2-011-37 §2.3).
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In the rest of this lesson
- The detail
- Deep dive
- Try it: Compare flag requirements
- Quiz: 5 questions
- Ask our engineers about this lesson
Familiarisation training from Al Safwan Academy. Finishing a course shows completion of online familiarisation training: it is not an STCW, flag-approved or manufacturer qualification, and these courses don't replace that training. The manufacturer's manual and your flag's rules always come first.