Boatseekr is a modern platform for a timeless pursuit — from first search to first sunset, we've got you covered.
Real Brokers, Real Boats - no noise.
AI powered image search - Find your boat in seconds.

Match by shape & style
Located at Emery Cove Marina with immediate access to San Francisco Bay, this 1989 Bayliner 4285 Avanti Sunbridge offers rare express-style lines combined with true two-stateroom motor yacht accommodations.
Powered by twin Caterpillar 3208 turbocharged diesel engines showing approximately 790 hours, she represents an increasingly hard-to-find opportunity: a 42 - 45 foot twin-diesel cruiser in the Bay Area under $50,000.
The 4285 Avanti was produced in limited numbers and blends spacious interior volume with distinctive sport cruiser styling. Her layout offers comfortable cruising, liveaboard potential, and strong diesel reliability.
The bright salon features opposing circular settees with excellent natural light and generous headroom. The galley includes a Vitrifrigo refrigerator/freezer, three-burner electric cooktop, microwave oven, trash compactor, and pressure hot and cold water.
Forward is a guest stateroom with offset queen berth and access to a full head with shower.
The full-beam aft master stateroom offers an island queen berth and private en suite head with separate shower.
The cockpit and sunbridge provide excellent entertaining space, radar arch, full enclosure, wet bar with ice maker, and extended swim platform with easy access to dock.
This vessel features an integrated navigation package including Garmin GPSMAP multifunction display, Furuno First Watch WiFi radar system with radome mounting, and QK-A027-Plus AIS receiver with NMEA 2000 and WiFi bridge with AIS targets viewable on Garmin display and compatible mobile devices. An external NMEA 2000 GPS antenna, dual VHF radios (Icom IC-M330 DSC VHF and West Marine VHF580 VHF), NMEA 2000 backbone network, NMEA 0183 integration via multiplexer, and Fusion marine stereo system with cockpit speakers complete the suite.
Twin Caterpillar 3208 DITA diesel engines allowing comfortable cruising 18 to 20 knots at 2000 rpm are paired with Twin Disc transmissions. A Kohler 12.5kW generator provides power, with fuel manifold tank management system. Recent upgrades include a new engine starter, cabin windows resealed, interior and exterior courtesy lighting upgraded to LED, and navigation lights upgraded to current U.S. Coast Guard standards. Bottom is cleaned bi-monthly by professional diver.
Cabin heating is provided via electric heaters. No air conditioning is installed. Cruise control is not operational.
This vessel presents as a solid, mechanically straightforward diesel cruiser. Cosmetics reflect normal age and use and are priced accordingly. She offers a strong platform for a buyer seeking diesel reliability and Bay cruising capability in this size range.
Slip is not included; however, the marina may be open to discussing rental with a new owner. Slip dimensions are approximately 45' on one side and 50' on the other, with open water access aft.
Seller is motivated and open to reasonable offers.
Explore boats with a similar design, shape and style.





There are many ways to approach offshore cruising. Read on for a summary of the main types, plus exciting. new options like Omikron.

Boatseekr co-founder Nick "Mudcrab" Crabtree's take on picking a racer cruiser that will tick all the boxes.

A boat survey (sometimes called a marine survey) is an independent professional inspection of a vessel’s condition, value, safety systems and overall fitness for use.