1991 Ocean 58 Convertible

The 1991 Ocean 58 Convertible is a classic American sportfishing yacht designed for offshore fishing, extended cruising, and comfortable time aboard. At 58 feet, it combines a large fishing cockpit, spacious flybridge, substantial engine room, and a three-stateroom, three-head interior. Its modified-V hull and deep forefoot were developed with offshore seakeeping in mind, while the teak interior gives the yacht a more residential feel than many dedicated fishing boats of the same era.

For buyers looking at a used sportfisherman today, the 1991 Ocean 58 Convertible is more about condition, maintenance history, and equipment upgrades than simply its age. A well-maintained example can still provide the space and offshore capability expected from a 58-foot convertible, but buyers should pay close attention to the original engines, electrical systems, generators, plumbing, fuel systems, and structural condition before purchase.

Is the 1991 Ocean 58 Convertible for Sale?

Yes, examples of the 1991 Ocean 58 Super Sport do appear on the used market, although availability is naturally limited because the model was built more than three decades ago. One recent listing showed a 1991 Ocean 58 Super Sport in Newport, Rhode Island, offered at $169,000, with twin Detroit Diesel 12V92 TA engines rated at 1,100 hp each. That particular boat had also received a number of mechanical and interior updates over the years.

The used market should therefore be evaluated on a boat-by-boat basis rather than by model year alone. A 1991 Ocean 58 Convertible with documented maintenance, rebuilt or well-maintained engines, updated electronics, a newer generator, and properly maintained mechanical systems can command a very different price from a similar boat requiring major refits. Buyers should review current listings, maintenance records, survey reports, and equipment condition before making an offer.

1991 Ocean 58 Convertible Price

The asking price for a 1991 Ocean 58 can vary considerably depending on condition, location, engine hours, upgrades, and maintenance history. For reference, a current listing was priced at $169,000, after previously being listed at $189,000. A historical Denison sold-boat report also recorded a 1991 Ocean 58 Super Sport listed at $110,000 and sold for $70,000 in 2012, showing how strongly market conditions and individual boat condition can affect transaction values.

When estimating the real acquisition cost, buyers should not stop at the advertised purchase price. A marine survey, haul-out, sea trial, engine inspection, insurance, transportation, dockage, and initial repairs can add substantially to the investment. For a 30-plus-year-old 58-foot sportfisherman, setting aside a separate refit and maintenance budget is particularly important, especially if the vessel has not undergone recent mechanical or electrical upgrades.

Performance and Propulsion

The 1991 Ocean 58 Super Sport was designed around a substantial twin-diesel propulsion system. Contemporary model information lists standard power around twin Detroit Diesel 12V-92 engines, while some boats were equipped with MAN diesels. One currently listed 1991 example carries twin Detroit Diesel 12V92 TA engines producing 1,100 hp each, with direct-drive inboard propulsion.

Performance depends heavily on the engine package, loading, propellers, hull condition, and sea conditions. Model references indicate that properly powered Ocean 58 Super Sports could cruise around 29–30 knots and reach speeds in the low 30-knot range. The hull uses a modified-V configuration with a pronounced forefoot and shallow keel, features intended to provide predictable handling and better comfort when operating offshore.

Exterior Design and Construction

The Ocean 58 Convertible has the proportions of a traditional American offshore sportfisherman, with a large cockpit, elevated bridge, pronounced bow flare, and expansive flybridge. The model measures approximately 58 feet in length with a 17-foot-6-inch beam, while published specifications list a draft of about 4 feet 10 inches. The hull was constructed in fiberglass, with cored hull sides and a modified-V running surface.

Fishing functionality is central to the exterior layout. The tournament-sized cockpit provides working space for offshore fishing, while the flybridge offers a centerline helm and substantial seating. The model was also designed with practical access to the engine room from the cockpit. Depending on the individual boat, equipment can include fighting chairs, tackle centers, fish boxes, rod holders, outriggers, radar, and upgraded navigation electronics, so buyers should verify the actual equipment fitted to the specific vessel rather than relying only on original specifications.

Interior and Accommodation

One of the defining characteristics of the Ocean 58 is its unusually spacious interior for a sportfishing yacht of its era. The standard layout provides three staterooms and three heads, including a full-beam master located below the raised salon area. This arrangement gives the yacht considerably more accommodation space than a purely fishing-focused vessel and makes it practical for longer cruising trips.

The interior traditionally features varnished teak cabinetry, comfortable salon seating, a dedicated galley, and substantial storage. A current 1991 example has a full-beam master with a king berth and en-suite head, a VIP stateroom with a queen berth, and a third cabin with bunk berths. Its galley includes a refrigerator/freezer, dishwasher, cooktop, oven, microwave, and other appliances. Because these yachts are now more than 30 years old, however, the actual condition and level of modernization can vary substantially between individual boats.

What to Check Before Buying a 1991 Ocean 58 Convertible

Before buying a 1991 Ocean 58 Convertible, a professional marine survey and comprehensive sea trial are strongly recommended. Particular attention should be given to the hull and deck structure, moisture intrusion, stringers, bulkheads, fuel tanks, through-hull fittings, shaft systems, rudders, steering gear, and bilge areas. The buyer should also inspect the flybridge, cockpit, teak components, windows, doors, and exterior hardware for age-related deterioration.

The propulsion system deserves equal attention. For boats equipped with Detroit Diesel 12V92 engines, buyers should review engine hours, maintenance records, oil analysis, cooling systems, turbos, injectors, aftercoolers, exhaust components, transmissions, shafts, and propellers. The generator, batteries, air-conditioning system, electrical panels, navigation electronics, plumbing, heads, freshwater system, and fuel system should also be tested. On a yacht this old, the condition of the individual boat is more important than the model year alone, so a detailed survey can help identify major repair costs before negotiations are completed.