Our calculator estimates four key marine insurance types: (1) Hull & Machinery (H&M) — covers physical damage to the vessel, typically 0.15-0.80% of insured value; (2) Protection & Indemnity (P&I) — third-party liability, crew injury, pollution, typically $30-150 per GT; (3) War Risk — covers war, piracy, terrorism, typically 0.02-0.25% of value; (4) Loss of Hire — covers income loss during repairs, typically 0.5-2.0% of annual charter revenue.

Key factors include: vessel age (older vessels pay significantly more), flag state (flags on Paris MoU blacklist add 20-40%), classification society (IACS members get better rates), PSC detention record (each detention can increase premiums 5-15%), vessel type (tankers and bulk carriers have different risk profiles), trading area (war zones add surcharges), and claims history. Our calculator models all these factors.

Our calculator includes optimization scenarios: (1) Reflagging to a white-list flag can save 15-25% on H&M premiums; (2) Reclassification to a top IACS society saves 5-15%; (3) Achieving a clean PSC record (zero detentions over 3 years) saves 10-20% across all premium types. Combined optimization can reduce total annual insurance costs by $50,000-$500,000 depending on vessel size and current profile.