Fire (§102) is broader than the name suggests. Two examples:
§102(b): a policy that includes loss by fire may cover money and securities against loss from any cause, except forgery and any dishonest, fraudulent or criminal act of an officer, employee, partner, director, trustee or authorized representative of the insured. A bookkeeper's theft from the safe falls in that exception.
§102(c): an all-risk Personal Property Floater on personal property other than merchandise. A retailer's stock for sale is outside it. The same floater language appears in the burglary class at §112(c).
Marine (§103) means transit risks, on water, land or in the air.
§103(a): it reaches property while being packed, crated, baled or otherwise prepared for shipment, while awaiting shipment, and during delays, storage and transshipment incident to the transit. It excludes aircraft and automobiles operating under their own power, or in storage not incidental to transportation. A new car crushed on a transport truck is cargo; a car damaged while driven on its own power is not marine.
§103(b): person or property connected with marine, inland marine, transit or transportation insurance, including liability from the construction, repair, maintenance or use of the subject matter. It does not include life insurance or surety bonds.
Three more property-type classes:
Plate glass (§107): insurance against breakage of glass, such as a store's front window.
Burglary (§112(a)): insurance against loss by burglary or theft or both. A theft-only policy is in this class; no forced entry is needed.
Sprinkler (§114): water damage to goods or premises from breakage or leakage of sprinklers, pumps or other fire-extinguishing apparatus, and loss through accidental injury to that apparatus. No fire is needed: a forklift striking a sprinkler head is a sprinkler loss.