Forty firms split into two working halves: an engineering and repair cluster (13 boat-repair specialists, seven marine engineers) and a charter and tour cluster (nine hire-and-charter operators, six private charters, five tour boats, four inter-island ferries). Concentration on the waterfront — 13 in St Peter Port, seven on Alderney. —
Sixteen firms — ten boat repairers, six marine engineers, two fabrication specialists, and a sole-trader marine electrician.
Eleven operators — three inter-island ferries, six private-charter specialists, three fishing skippers. Oldest 1969; newest 2024.
Seven dealers — four handling boat sales, two engine-only, one an aircraft-brokerage outlier. Three cluster at St Sampsons Marina.
Six chandleries — four limited companies, two at St Peter Port waterfront and one on Alderney trading over 45 years.
Four firms covering rigging and sailmaking — one dedicated sailmaker in St Peter Port, three mixed-trade boatyards and chandlers.
Four custom yards on the island — Aquastar (1969) for luxury motor yachts, Marine Fabrications (1985) for stainless and aluminium work.
Four operators: States-run Guernsey Ports and Alderney Harbour, private Beaucette Marina (since 2005), and the GBA (1923).
One firm per niche, picked for editorial depth.
Marine services and chandlery — fuel, repairs, clothing, and Suzuki dealer.
RIB boat tours and wildlife voyages — Herm, Sark, private charters
Marine engineering and boat dealer — Mercury/Mariner outboard specialists
Marine chandlery, brokerage, engineering — fuel, lifting, water taxi
Blinds, awnings, curtains, shutters, marine covers — custom soft furnishings
Marine fabrication & welding: boat repair, refits, architectural metalwork.
Marina & glamping: serviced berths, huts, campervan pitches, restaurant
Auto and marine electrics specialist; diagnostics, battery supply, full repair
Marine specialist established circa 1996 — Yamaha, Jeanneau, and Ballistic dealership
Marine & aviation safety equipment specialist — servicing, fitting, repairs.
Fiduciary services — trusts, companies, foundations, and marine.
Tagged in Boat & Marine but not in one of the specific niches above.