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2005 San Juan 48

Sausalito, California


SEAWALKER, hull no.9 is one of the more pristine examples of a San Juan 48 ever offered to market. Lovingly curated & piloted by professional crew while serving as a chase tender to the seller's mega yacht, this stunning lobster-style yacht has been nurtured with an open checkbook her entire life. One owner since 2006.

  LLC Owned & turn-key with a 2-cabin/2-head layout, bow & stern thrusters, dual zone heat & A/C, garaged inflatable dinghy, teak cockpit. Her twin V-drive 825hp Detroit Diesel MTU Series 60s are capable of 30mph cruise/40mph max speed. Her mains & gearboxes have benefitted from a complete rebuilt in 2016 vastly extending the life of the industrial-grade Detroit Diesels.  

Every San Juan is built of Kevlar/E-glass vacuum-infused resin process. The entire structure of the boat is built using wood-free composites. Her hull received a fresh re-spray Flag Blue AwlGrip while dry docked in 2016. 

Spring 2021 brightwork & hull polish show with a mirror finish. Her bottom was stripped & painted in 2019 with Propspeed added to her running gear. Call to view her today, you won't be disappointed.


Listed by City Yachts

THIS BOAT IS SUBJECT TO AN EXCLUSIVE LISTING AGREEMENT WITH CITY YACHTS 415-595-5373 AND IS NOT OFFERED FOR SALE BY BLM YACHT SALES / FALL RIVER. BLM Yacht Sales / Fall River is merely providing this information in an effort to represent you as a buyer in the purchase of this vessel.

Basic Boat Info

Make: San Juan
Model: 48
Year: 2005
Condition: Used
Category: Power
Builder: San Juan Composites
Designer: Gregory C. Marshall
Construction: Composite
Boat Hull ID: JUC48009D505
Has Hull ID: Yes
Range: 375 mi


Length: 48 ft / 14.63 m
Length Overall: 51'10 ft / 15.80 m
Waterline Length: 44'3 ft / 13.49 m
Beam: 15'6 ft / 4.72 m
Range: 1'4 ft / 375 m
Max Draft: 2'9 ft / 0.84 m
Displacement: 40,000 lb
Electrical Circuit: 220 V
Single Berths: 5
Cabins Count: 2

Engines / Speed

Engines: 2
Engine #1 Specs:
  • Make: Detroit Diesel
  • Model: Series 60 DDEC
  • Drive Type: V
  • Fuel: Diesel
  • Engine Power: 825hp
  • Type: Inboard
  • Propeller Type: 4 Blade, Bronze
  • Year: 2005
  • Engine Location: Port
Engine #2 Specs:
  • Make: Detroit Diesel
  • Model: Series 60 DDEC
  • Drive Type: V
  • Fuel: Diesel
  • Engine Power: 825hp
  • Type: Inboard
  • Propeller Type: 4 Blade, Bronze
  • Year: 2005
  • Engine Location: Starboard
Total Engine Power: 1,650hp
Cruising Speed: 26.07 kn
Propeller RPM: 1675
Maximum Speed: 34.76 kn


Fuel Tanks: 1
Fuel Tank Capacity: 750 gal
Water Tanks: 1
Water Tank Capacity: 120 gal
Holding Tank Count: 1
Holding Tank Capacity: 60 gal


Heads Count: 2
Drive Type: V
Trim Tabs: Yes
Windlass Type: Electric
Boat Class: Downeast


The SJ48 combines lobster boat styling with state-of-the-art design, engineering and composite construction. Her hull provides comfort and sea keeping in difficult sea conditions yet allows for higher speed cruising in calm to moderate sea conditions. The SJ48 provides a safe, comfortable, dry ride in the no-nonsense environment of any ocean or waterway.

A broad deck with flexibly comfortable seating makes cruising and entertaining a natural aboard the San Juan 48. Ease through the tempered glass door into a private world of comfort and luxury that is simply elegant. Inside the cabin, a gracious dining table seats six in casual elegance. Satin teak greets captain, family and friends at every turn. Refined materials and design continue below decks with a generous galley featuring an open-air view of the pilothouse. All spaces are fluidly and intuitively connected, and all are climate controlled with both heat and air conditioning. The two staterooms each berth two in queen-size comfort, each with its own flat-panel video and audio entertainment system. Each also includes its own private head with exquisite glass shower.

An extensive list of systems and equipment one has come to expect as optional is included standard here. Everywhere you look touch or feel provides sensory overload. Every space, each fitting, texture and material aboard is as inviting to the eye as it is to the hand. The mahogany wheel of the helm. The faucet handle on the wet bar. The effortless rise of the aft seat to expose the shore boat. All the way to the fanatical manner in which every visible fastener aboard has been stopped in the same rotational position. There is nothing else quite like this on the water.

Engines & Running Gear

In December 2015 both mains underwent a complete overhaul in Mallorca Spain. Main engines were removed with 4216 original hours by local Detroit Diesel service providers at Holland Diesel Maassluis. Upon removal the mains were then shipped to the Netherlands for a complete rebuild down to their engine blocks. Cylinders, bearing, heads, gaskets, injectors, turbos, thermostats, heat exchangers, alternators, filters, fluids, seals & hoses were addressed. 

April 2016 both freshly-painted Detroits were shipped back to Spain and installed with Holland Diesel technician aboard for the seatrials. Sum for the total repairs total $115,000. Service records furnished upon request. 

Engine access is through the hydraulic day hatch or via the cockpit seating engine boxes. Engine compartment hatches are lined with sound insulation and are gasketed to reduce noise levels. The entire engine compartment & pilothouse are lined with sound insulation material.

The cored hull, deck and superstructure construction provides for excellent sound and vibration damping. The main engines and machinery are isolation mounted to reduce noise and vibration.

  • 2 x 825hp Detroit Diesel MTU Series 60  V-drive inboards w/5450hrs
  • Twin Disc 1:52:1 Marine Transmissions
  • Detroit Diesel DDEC engine controls
  • 4-bladed Nibral bronze variable pitched props in tunnels. Re-surfaced and coated with Propspeed (2019)
  • Tides Marine dripless shaft & rudder stock logs with custom S/S rudder post dampeners
  • Marol rotary-actuated hydraulic steering
  • Northern Lights 12kW genset w/soundshield
  • 3000-watt Inverter
  • Aqualift custom exhaust 
  • 6-battery bank
  • Oil exchange pump
  • Turbo condensation basin prevents moisture build-up in bilge

Manufacturer Specs:

The large cockpit was designed to allow ample room for sitting, dining, fishing and sunbathing. An opening transom door is provided for ease of boarding. The built-in transom seat hinges forward and opens mechanically to provide a safe, secure, underside dingy stowage garage for quick launch and retrieval of a shore boat, personal watercraft or mountain bikes.

A removable electric davit system with remote control is provided for launch and retrieval of the shore boat. The davit, is designed to be easily removed from its aft deck socket and stowed in the transom garage. The shore boat garage also provides gear stowage. A hot and cold cockpit shower is located at the transom. Sitting and sunbathing space is also available at port and starboard sun pads as a standard.

Removable hatches located beneath the seating or sun pad provide additional access to the engines for service. A flush hatch in the deck provides easy access to the main engine compartment and generator. Port and starboard cockpit bulwark lockers allow for storage of fenders and mooring lines. 


Manufacturer Specs:

The pilothouse is built of an E-glass, Corecell®, resin infused composite providing a stiff, strong, lightweight structure with sound and vibration dampening qualities. The starboard helm seat provides seating for two with storage below. The pilothouse seat storage includes a chart / computer accessory locker and also storage under the seat cushion.

The main electrical panel is located on the backside of the pilothouse helm seat. Aft of the helm seat is the bar area with counter, bar sink, icemaker / beverage fridge, drawers and storage cabinet beneath. The portside settee with high gloss teak table provides seating for six with panoramic views. The portside of the pilothouse, forward of the settee, is open to the below decks galley providing daylight and additional ventilation. A large retractable composite sunroof with tinted glass in the pilothouse results in all-weather versatility. Vents in the overhead provide additional fresh air ventilation to the pilothouse.

The pilothouse helm station provides for a complete array of electronics and instruments, and offers 360-degree visibility. Pilothouse windshield and side window glass is light gray tinted, ¼” bonded, tempered glass with ceramic frits. Non-tinted ¼” tempered glass is bonded into the “scallops” on the aft sides of the pilothouse. The pilothouse is secured with removable clear rigid panels and a frosted glass door with locking handset located aft of the settee and bar area. A hinged composite mast that folds down for low bridge clearance is located on the pilothouse roof.

  • Autopilot replaced 2017
  • Standard VHF Gx1260
  • Furuno NavNet 1933C w/ 10.5" color LCD radar/chart plotter/GPS/Sounder
  • ACR RCL 100D Remote spotlight mounted on mast c/w electronic remote control.
  • Custom nav and communication computer

Manufacture Specs:

The below decks general arrangement offers forward and starboard side staterooms with queen berths, with a galley and two heads complete with separate showers. Both staterooms have ample storage in hanging lockers and drawers. Storage is also provided beneath the berths. Solid teak louvered doors are used throughout for privacy and ventilation.

The master stateroom forward provides an “island queen” berth arrangement with two large hanging lockers and further storage provided in drawers and lockers. The master stateroom has two screened, opening stainless steel port lights and a screened Lewmar Low Profile overhead hatch providing daylight and ventilation.

The starboard side guest stateroom provides a queen berth arrangement that folds up converting the queen berth into a settee, with a hanging locker and stowage in under berth drawers and lockers. An upper pilot berth provides an additional single berth. The centerline bulkhead is a two panel pocket door that opens the guest stateroom to the galley, converting it into a below decks settee, den or entertainment area. A screened, opening stainless steel port light provides daylight and ventilation to the guest stateroom. Berth cushions/mattresses are 5” foam composites with a wide variety of fabrics available for berth upholstery. Overheads are Majilite fabric or equal with teak trim supports.


A three-burner electric radiant heat cook top is standard along with a stainless steel Sharp convection microwave oven mounted above. A Fisher & Paykel dishwasher is located in a teak cabinet below the cook top. A double stainless steel sink is supplied with hot and cold water through a Scandvik mixer with a pullout-extending faucet.

An abundance of storage is provided in above counter cabinets, below counter cabinets and drawers. The refrigerator is a custom stainless steel, front loading, refrigerator and drawer freezer with a water cooled remote mounted compressor.

A Splendide combination washer / dryer is located below and behind the companionway steps. Countertops are solid surface material with teak sea rails. An opening port-light with screen in the galley provides ventilation. The galley is open above to the pilothouse providing additional daylight and ventilation.


The port and starboard heads with separate showers are designed to be easily cleaned and maintained. Tecma heads direct-drop to their respective 16-gal holding tanks with shore side pump out fitting on deck. No additional blackwater plumbing or macerators are needed. A discharge pump is provided for overboard use where allowed. The holding tank is sounded with an electronic tank level gauge.

Stainless steel sinks are supplied with hot and cold water. Countertop materials are solid surface material with teak sea rails. The separate showers with seats drain to a sump and are discharged via a drain pump. A hot water heater circulation pump supplies hot water to showers and faucets instantly.

Mirrors and lockers with shelves are provided in each head. The heads are provided with stainless steel screened, opening port lights and overhead screened Lewmar Low Profile hatches for daylight and ventilation.


SEAWALKER'S hull has been designed and computer modeled to be both handsomely styled and capable in a broad range of sea conditions. Her traditional flared bow with fine entry and tumble home aft, complemented by her hydro-dynamically efficient underbody. The SJ48 hull is formed using a kevlar/E-glass and Corecell® foam core composite vacuum infused with vinyl ester resin. 

Dupont Kevlar/E-glass hybrid is used to greatly increase the strength of the hull.Her resin infused process yields strong lightweight parts with high glass-to-resin ratios. The core is removed and replaced with solid fiberglass in areas surrounding thru-hulls.

Watertight structural bulkheads separate the hull into damage control zones with dedicated bilge pump. Structural bulkheads are built using Corecell foam core with E-glass skins infused with vinyl ester resin. Longitudinal and transverse stringers are an E-glass PVC and Corecell foam core composite. 

The swim step is built using Corecell® foam core with E-glas skins infused with vinyl ester resin. The walking surface of the swim step is teak. the swim step is fastened to the hull using stainless steel fasteners and the three custom stainless steel struts for support. 

The entire structure of the boat is built using wood free composites. 


SEAWALKER'S deck is a one piece vacuum infused composite molding using E-glass and Corecell with epoxy vinylester resin. The hull is joined to the deck using an engineered flanged box joint and is bonded using a high strength adhesive with stainless steel mechanical fasteners. This provides a permanent, watertight hull/deck joint. The walking surfaces of the foredeck, side decks, cabin top and aft deck are molded non-skid with 1" waterways. The walking surfaces of the cockpit and pilothouse are teak decking.

Mermet sunscreens for all pilot house windows. Half bimini for cockpit.

  • Fiberglass Decks
  • Fresh Deck wash down
  • Lewmar Windlass
  • Zodiac 8' Dinghy
  • Dock lines
  • Fenders
  • Anchor locker
  • 35 s/s Plow anchor c/w 250' chain
  • Teak decks in cockpit and pilothouse

Manufacturer Specs:

Teak toe rails are blind fastened to the deck edge from the stainless stem bow fitting to the transom. Teak trim runs from the port and starboard aft sides of the pilothouse forward around the forward cabin top. Teak cap rails are used on the top of the cockpit bulwarks, inboard of the side decks and transom and are blind fastened.

Handrails located on the pilothouse roof and cabin top are custom stainless steel blind fastened. All exterior teak is bright finished solid teak, blind fastened.

The pilothouse joinery is meticulously built from hand-selected teak with bright finish. The pilothouse settee table is built using bright finished teak. The helm and dash area is finished in teak. Interior pilothouse sides are bright finished teak panels with solid teak window trim. Teak sea rails are provided at the edges of all counter surfaces. Teak battens support the pilothouse overhead panels, which are covered in Majilite fabric or equal.


Manufacturer Specs:

The interior is trimmed with teak and finished to a satin sheen. The hull sides forward in the master stateroom and in the starboard side guest stateroom are sheathed with solid teak “ceiling” strips. The below decks cabin sole is satin finished teak with holly splines.

Countertops are surfaced with solid surfacing material with teak rails.




All exterior teak trim brightwork features WEST SYSTEM epoxy and 12 coats of sprayed Stirling urethane, UV inhibited epoxy and multiple coats of Imron clear acrylic providing an extremely hard, low maintenance finish.

The deck and superstructure are hand faired to the highest industry standards and are painted with Imron paint. The hull is painted in the owner’s choice of standard Imron paint colors.

SEAWALKER is inlaid with Gold Leaf on the transom.


The Company offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to prior sale, price change, or withdrawal without notice.

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