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Key Differences: H&M vs. P&I| Feature | Hull & Machinery (H&M) | Protection & Indemnity (P&I) |
| Primary Focus | First-Party Property Insurance (the vessel itself). | Third-Party Liability Insurance (legal liabilities to others). |
| Insured Assets / Risks | Physical damage or loss to the ship’s hull, main engine, auxiliary machinery, boilers, and navigation equipment. | Injuries/death to crew/passengers, cargo loss/damage, oil pollution, wreck removal, and fixed/floating object damage. |
| Structure & Model | Commercial fixed-premium underwriters (e.g., Lloyd's syndicates, commercial insurance companies) operating for profit. | Non-profit, mutual associations (Clubs) run by and for shipowner-members through a call system. |
| Collision Liability | Covers the insured vessel’s own physical damage and usually 3/4 Running Down Clause (3/4 RDC) collision liability. | Covers the remaining 1/4 collision liability (1/4 RDC), or 4/4 RDC if fully transferred to the Club. |
| Limit of Liability | Strictly capped at the Agreed Insured Value of the ship specified in the policy. | High, flexible limits (e.g., up to $3.1 billion for general claims under the IG reinsurance pool, and $1 billion for oil pollution). |
In maritime insurance and P&I Club practice, 2nd Cover (often called Second Layer Cover, Secondary Cover, or Excess / Additional Cover) refers to insurance that sits above the standard primary P&I policy limits or covers risks explicitly excluded by primary rules.
1. Group Pooling & Reinsurance Layers (The Structural "2nd Layer")
In the International Group (IG) pooling mechanism, claims are paid in layered structures:
1st Layer (Individual Club Retention): The primary P&I Club pays claims up to its individual retention limit (currently $10 million).
2nd Layer (The IG Pool): Claims between $10 million and $100 million are shared collectively among all 12 member clubs of the International Group under the Pooling Agreement.
3rd Layer (General Excess Loss Reinsurance): Claims above $100 million up to $2.35 billion ( Financial year 26-27) are reinsured in the commercial market. ( For financial year 25-26, it was 2.2 Billion, As per Nortstandard P&I club)
4th layer (Collective Overspill Protection (The $1 Billion Layer)): Claims from $2.35 billion up to $3.35 billion.