Bayliner 4788 Pilothouse Motoryacht, a Used Buyer's Guide

Why so many buyers search for a Bayliner 4788 for sale

Ask a Seattle yacht broker which used boat they could sell twice over and the Bayliner 4788 Pilothouse comes up quickly. It was built in Bayliner's yacht plant in Washington State through the mid to late 1990s and into the early 2000s, and it delivers something few 47-footers manage at its price: two private staterooms, two heads, a raised pilothouse helm and twin diesels, often for less than the cost of a new 30-foot outboard boat.

The 4788 earned its following in the Pacific Northwest, where the pilothouse lets you drive dry and warm through Puget Sound drizzle and up the Inside Passage. That reputation has spread nationwide, and boats now trade on Chesapeake Bay, the Great Lakes and the Gulf Coast as well. If you are scrolling listings, you will notice a wide spread in condition, which is why understanding what to check matters more than the model year.

The model was the last big Bayliner yacht before Brunswick moved its larger cruisers to the Meridian name in 2003. Its successor, the Meridian 490 Pilothouse, kept the same general concept with updated styling.

The pilothouse that makes the 4788 different

The core of the design is a raised pilothouse a few steps up from the saloon, with the lower helm, a settee for crew or navigator, and side access to the decks. From there the skipper sees over the bow without climbing to the flybridge, which on a cold or wet day is the difference between enjoying a run and enduring it.

The saloon sits on the main deck aft of the pilothouse with large windows and a sliding door to the cockpit. Above it all is a flybridge with a second helm and seating, and many boats carry a davit for a tender on the aft section of the bridge. The 4788 is a genuine three-station boat, inside, up top and on deck, and owners tend to use all three.

• Raised pilothouse helm with side deck access
• Saloon on the main deck with cockpit access
• Flybridge helm with room for a tender on most boats
• Walkaround side decks for line handling

Two private staterooms, an owner's cabin forward and two heads

Below the pilothouse and saloon is the accommodation deck. Bayliner's 2001 brochure describes two private staterooms: the owner's cabin forward with an island double berth and its own head with an enclosed shower and bathtub, and a second cabin with a double berth and a cedar-lined hanging locker. Owners and model years differ, so walk the boat and check the actual arrangement rather than relying on a listing description.

Two fully enclosed heads with molded-in showers serve the two cabins. Many 4788s have had their original heads converted to freshwater or vacuum systems, a worthwhile upgrade to look for. The joinery is typically light oak in this era, which some owners love and others refinish, and the overall feel is practical rather than luxurious. Buyers who walk aboard expecting a Hatteras will be disappointed; buyers who walk aboard expecting a Bayliner are usually surprised by how much they get.

Cummins power, published speeds and what to check

Every 4788 runs twin diesels on straight shafts, with 2 inch stainless shafts and dripless seals in the 2001 specification. That year Bayliner offered twin Cummins rated at 330 or 370 hp. Engine packages varied over a production run that began in 1994, and many boats have been rebuilt or repowered since, so always confirm the exact engine model and rating from the engine plates and service records rather than trusting a listing headline.

Bayliner's published figures, taken at cruise load with full tanks, show the twin 330s cruising at 17.2 knots on 29.8 gallons per hour and topping out at 20.5 knots, while the twin 370s cruise at 18.4 knots on 34.8 gallons per hour and reach 21.8 knots. With 444 gallons of fuel, the builder quotes a maximum cruising range of 266 statute miles with the 330s and 243 with the 370s, including a 10 percent reserve. Slow to 8 or 9 knots and burn drops to single digits, and many Pacific Northwest owners run that way on long trips to Desolation Sound or Alaska.

These are good, simple propulsion packages. Straight shafts are easy to service, the engines are accessible from the engine room under the saloon, and the Cummins diesels have a long track record in commercial and recreational use. Expect aftercoolers, heat exchangers and exhaust risers to need attention on any boat of this age.

Known weak spots after 25 years on the water

Every boat of this age has issues, and the 4788 has a well-documented list. Owners' groups talk most about window leaks around the pilothouse and saloon glass, soft spots in cored decks around fittings, aging fuel tanks and tired original wiring and DC panels. None of these are deal breakers, but each can cost serious money if it is ignored.

Pay particular attention to how previous owners handled upgrades. A boat with a professionally installed inverter, new batteries, LED lighting and modern electronics is worth more than one with a tangle of amateur add-ons that will eventually need ripping out.

• Leaking frames on pilothouse and saloon windows
• Moisture in cored deck areas near stanchions and hatches
• Fuel tank condition and fuel line age
• Original 12 V and 120 V panels and wiring runs
• Exhaust elbows and risers on the diesels
• Flybridge canvas and enclosure condition

What a 4788 costs to run each year

A realistic annual budget is $28,000 to $55,000 excluding the purchase price and any major refit. Moorage for a boat that Bayliner lists at 54 feet rigged, with platform and pulpit, is the biggest line item, followed by insurance, engine service, bottom paint and haulouts. Fuel at 30 gallons per hour at fast cruise adds up quickly, which is why many owners cruise at displacement speed and accept a slower but far cheaper trip.

Older boats also need a reserve for unexpected repairs. Setting aside 5 to 10 percent of the purchase price each year for refit items such as canvas, electronics, upholstery and engine work is a sensible approach, and it will keep the boat competitive when you eventually sell.

Reading a Bayliner 4788 listing like a broker

Start with the engines, then the windows, then everything else. A listing that leads with engine make, hours and recent service tells you the seller understands what buyers value. A listing that leads with throw pillows and a new TV is often hiding a long maintenance list.

Ask for engine oil analysis, a recent haulout date, a list of electronics with installation dates, and any history of window rebedding. Insist on a sea trial that includes a full-throttle run long enough to check temperatures, and hire a surveyor who knows Bayliner and Meridian boats of this era. The Pacific Northwest has several, and their knowledge of common problem areas is worth the travel cost.

Who the 4788 suits, and who should look elsewhere

The 4788 suits couples and families who want liveaboard-level space, a protected helm and diesel reliability on a modest budget. It suits Pacific Northwest and Great Lakes cruisers in particular, along with liveaboards in marinas that allow it.

It is not a fast boat, a fishing boat or a showpiece. Buyers who need 25-plus knots, a big cockpit for fishing, or contemporary interior styling should look at newer sedan bridges or express cruisers. For everyone else it remains one of the most practical used yachts on the American market.