1964 Kettenburg 43 #5 A

1964 Kettenburg 43 #5 A


Presented By

Chris Winnard



Our Location

San Diego
1450 Harbor Island Dr. Suite 203
San Diego, CA, US



This is a unique opportunity to own a piece of San Diego nautical history. A classic sailboat that has been upgraded by a meticulous owner over the last twenty years. The boat has been priced knowing that there is still work to be done but one look at all the installed systems will impress anyone who appreciates wiring and installations done at the highest level.
Here is some history on the boat:

During the early 1960's, the Kettenburg boatyard of San Diego designed a forty-three-foot ocean racer/cruising sloop known as the K43. The yachts were built to the Cruising Club of America rule that strongly favored seaworthiness and comfort necessary for a good cruising boat, as well as the high performance demanded of a racer.

Nineteen K43s were built, and only two of the hulls were built out of 5052 marine grade aluminum with an independent spade rudder.

Proteus is the first aluminum K43 launched in July 1964, which is the fifth boat in its class. The boat was commissioned by the well-known southern California Torrance sail maker Ken Watts. The hull was built by Yacht Dynamics, a group of southern California airplane engineers associated with McDonnell Douglas. The wooden deck, cabin and interior were built by the Kettenburg Yard.

The aluminum K43 was designed with a spoon bow entrance and a cut away forefoot extending down to a deep full keel. The beam of the boat is eleven feet with a draft of six feet two inches. The stern is configured with a wineglass shaped overhanging transom and a counterbalanced independent spade rudder at the point of immersion.

Constructing the hull in aluminum instead of wood saved approximately 1300 pounds in hull weight. The weight saving was placed into the lead ballast located in the keel. The hull plates were rolled and fully welded. A layer of epoxy was applied under the water line, making the hull smooth and fair. Interestingly, the boat has no keel bolts, as the lead ballast is encapsulated into the aluminum hull.

The design and materials used to construct this K43 created a light and easily driven sloop, allowing for the use of smaller sails.

The deck, cabin top and interior of the boat was custom built out of wood. The interior has full headroom throughout, and a light and airy main cabin is surrounded by large alloy framed windows and bronze portholes. The deck is made of 1? marine plywood overlaid with glass fiber cloth and through bolted to the hull. The cabin interior has Honduras mahogany trim and highlights. The main cabin table is an exquisite example of an inlaid mother-of-pearl scallop shells.

Records show that in her first year of racing under Ken Watts K43 No. 5 won the Whitney racing series of southern California. And in later years under three different owners, the boat went on to win the Champion-of-Champions race in San Francisco Bay; sailed a fourteen-month cruise from California to the Marquesas and Tuamotu Islands, Tahiti, Hawaii and back. The boat also successfully completed the Transpack twice.

The present owner (a certified marine engineer) has completed an extensive refit over the past twenty years of ownership. 


Electronics & Navigation Equipment

- B&G Zeus3 9" plotter with electronic chart coverage - California to Panama
- B&G Broadband 3G Radar interfaced to GPS and plotter
- B&G NAC-2 autopilot computer
- B&G VHF H50 fixed mounted radio and Bluetooth handset at helm
- Standard Horizon HX870 handheld radio with built in GPS
- B&G Triton2 autopilot + RAM-T1-12V
- B&G Forward Scan Sonar + separate depth sounder + speed log
- B&G/SIMRAD Precision-9 magnetic heading compass
- B&G Wind Indicator located top of mast
- MeteoMan electronic barometer with wind speed and internal/external temperature
- Radar reflector
- LED mast and deck navigation lights
- LED blue/white spreader deck lights
- 316 stainless steel Lightning Master striker located at top of mast and attached to rigging with heavy duty cable immersion to ocean

Steering Station:

- Navpod suspended above brinicle compass on 316 stainless steel frame with cup holders
- Collapsible 42" wheel, leather bound

Electrical System:

- 12 volt (DC); 110 volt (AC)
- Charles Marine Isolation Transformer
- (4) Victron 12 volt-110AH GEL house batteries
- (1) 12 volt Optima engine starter battery
- (1) 12 volt Optima windless battery
- Victron Multiplus Compact battery charger/inverter
- (3) 150 W Solar panels
- Marlec Wind Generator
- Honda Generator (portable)
- Dockside 50' shorepower cord-30 amps

12-volt Electrical Equipment:

- PUR PowerSurvivor 40E watermaker
- Main cabin CD/ AM/FM stereo and I-pod connection cable with salon & cockpit speakers
- Forward cabin CD/ AM/FM stereo with forward mounted stereo-speakers main berth
- 12 volt 30? LED TV with PowerMax duel band signal amplifier with aft external dome
- Four Caframo fans, three in main cabin, one located forward birth
- C02 Alarm (wired)
- LED cabin lights AC and DC

Basic Information

Manufacturer: Kettenburg
Model: 43 #5 A
Year: 1964
Category: Sail
Condition: Used
Location: Wilmington, CA, US
Available for sale in U.S. waters?: Yes
Vessel Name:
Boat Type: Cruisers
Hull Material: Aluminum
Hull Type: -
Hull Color: -
HIN: K-43-#5-A
Designer: Kettenburg
Flag of Registry: -

Dimensions and Weight

Length: 42.67 ft
LOA: 42.67 ft
Beam: 11 ft
Dry Weight: 20,000 lb
Bridge Clearance: 56 ft


Make: Perkins
Model: 108
Engine(s): 1
Hours: 300
Cruise Speed: 6 kn
Range: 199.08 mi
Engine Type: Inboard
Drive Type: Direct
Fuel Type: diesel
Horsepower: 50 hp
Max Speed: 6 kn

Tank Capacities

Fuel Tank: 75 Gal()
Fresh Water Tank: 150 Gal()
Holding Tank: 15 Gal()


Total Cabins: 2
Berths Count:
Total Sleeps:
Total Heads: 1
Captains Count: No
Crew Cabins: -
Crew Berths: -
Crew Sleeps: -
Crew Heads: -


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.