Kadey-Krogen 42
Built 1977–1998 by Asia Harbor Yacht Builders (Kaohsiung, Taiwan)
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About the Kadey-Krogen 42
Researched from public sources for this model. Any individual boat may have been modified or repowered — confirm before relying on any figure.
- Built
- 1977–1998
- Builder
- Asia Harbor Yacht Builders (Kaohsiung, Taiwan)
- Designer
- Art Kadey and James S. Krogen
- Length
- 42.33 ft
- Waterline
- 39.17 ft
- Beam
- 15 ft
- Draft
- 4.58 ft
- Displacement
- 40,000 lb
- Hull
- fiberglass-cored
- Hull / keel
- full displacement
- Propulsion
- inboard
- Fuel
- 700 gal
- Water
- 360 gal
- Holding
- 40 gal
- Generator
- factory option
- Number built
- 206
Tank capacities — where the figures come from
-
Fuel 700 gal
“Fuel....700 gals” — spec database, his.com · “With its 700-gallon fuel supply” — search excerpt, soundingsonline.com · “Fuel Tank: 700 Gallons” — search excerpt, curtisstokes.netAn owner-compiled Krogen FAQ (1998, partly from Kadey-Krogen data), Soundings and listings all agree; the builder's site couldn't be checked. A 1985 listing describes three tanks and a 1980 listing says 600, so individual boats vary.
-
Water 360 gal
“Water....360 gals” — spec database, his.com · “FRESH WATER TANK 360 gallons” — search excerpt (1982), americanyachts.comThe owner-compiled FAQ and listings agree, but there's no builder source.
-
Holding 40 gal
“HOLDING TANK 40 gallons” — search excerpt (1982), americanyachts.com · “one holding tank of approximately 40 gals.” — search excerpt (1985), edwardsyachtsales.com · “Holding Tank: 30 Gallons” — search excerpt (1982), yachtr.com · “a 60-gallon holding tank” — search excerpt (1980), boattrader.comListings range 30-60 gal (many boats have replaced tanks); 40 is the most common.
-
Water heater unknown
“12-gallon water heater (2018)” — search excerpt (1988), wcyachts.comOriginal size not found; one 1988 boat has a 12 gal heater fitted in 2018 (replacement).
Tanks are often replaced or added on older boats — check the tank labels or a survey for yours.
Thrusters and steering — where this comes from
-
Bow thruster unknown
“I recently bought a 42 Kadey Krogen. One of my first projects is to have a bow thruster installed.” — search excerpt, trawlerforum.com · “A number of the boats have bow thrusters” — search excerpt, his.com · “Wesmar 12-volt Bow Thruster Dickson Hydraulic Stern Thruster” — broker listing (1983), yachtr.comAn owner-written Kadey-Krogen 42 description says a number of boats have bow thrusters; one owner was adding one to a newly bought boat, and several listings show them. Only one is clearly an addition and no builder list was found, so it's not clear whether any were factory-fitted.
-
Stern thruster unknown
“Dickson Hydraulic Stern Thruster” — broker listing (1983), yachtr.comA stern thruster was seen on one 1983 listing only.
-
Steering unknown
No builder or owners' source on the steering system was found; a 1997 listing mentions hydraulic steering as part of a custom hydraulic package, which isn't typical.
Thrusters and steering are often replaced — check the units on your boat before ordering parts.
Ballasted (about 2,500 lb) full-displacement pilothouse trawler with 2,000+ nm range; 206 built (confirmed by Soundings) including five twin-engine boats. Standard model has walkaround decks; Widebody (from 1989) has a full-width salon. Deck and superstructure changed from glass-over-plywood to cored construction at hull #65 (1985). Generator doubles as a get-home engine.
Engines fitted
-
Ford Lehman 120 — 120 hp, diesel, single
standard
Original single engine on early boats (about 7-8 kn cruise). HMY says 206 were built, only five with twin engines.
-
Ford Lehman SP135 (Super 135) — 135 hp, diesel, single
standard
Owner FAQ says the builder moved from the Lehman 120 to the SP135 around 1985; a 1985 boat lists a single Lehman 135.Sources: his.com · denisonyachtsales.com · hmy.com
-
Perkins M135 (Sabre 135) — 135 hp, diesel, single
standard
Owner FAQ says late-production boats (after Lehman stopped building engines, early 1990s) got other 130-135 hp engines, naming Perkins and possibly Sabre; a 1995 widebody lists a single naturally aspirated Perkins M135.Sources: his.com · denisonyachtsales.com
-
American Diesel 135 — 135 hp, diesel, single
standard
Named in the owner FAQ as one of the engines used on late boats after the Lehman supply ended; single source only.Sources: his.com
Boats of the same model can differ — check which engines yours actually has before ordering parts.
Generator
factory option
“An optional emergency drive was available, using a dedicated 12-kW generator.” — review, soundingsonline.com
Soundings magazine describes an optional emergency drive powered by a dedicated 12 kW generator, which is what we listed before as the generator doubling as a get-home engine. Single boats for sale show other sets, such as a Northern Lights 6 kW on a 1980 boat. Only this one review mentions the option.
-
Generator (make not stated) — 12 kW
factory option
Dedicated generator driving the optional emergency (get-home) drive; make and fuel not stated by Soundings.“An optional emergency drive was available, using a dedicated 12-kW generator.” — review, soundingsonline.com
Generators are often replaced or added — check the unit's own plate before ordering parts.
Known problems for this model
-
Wet foam core in the hull bottom hull
Earlier 42s have a cored hull below the waterline; thru-hulls or transducers added without sealing the core let water in, and some cores have been found soaked. Moisture-test the bottom at survey.trawlerforum.com · forums.sailinganarchy.com
-
Screwed teak decks over cored deck deck
Caulking and bungs must be kept up or water gets into the deck core; boats whose teak has been removed and glassed over are valued higher. Hulls before #65 have glass-over-plywood decks.trawlerforum.com · hmy.com
-
Salon window and pilothouse door leaks deck
Look for water staining around salon windows and the pilothouse doors and windows.trawlerforum.com
-
Hard-to-reach holding tank plumbing
An original holding tank that has not been upgraded is a major job to replace because of poor access.trawlerforum.com
-
Hull bottom deflection on early boats hull
Some late-1970s and early-1980s cored hulls developed bottom deflection, which led the builder to switch to solid glass below the waterline; the PVC core does not rot but can take on water at penetrations.trawlerforum.com
Engines & parts
Ford Lehman 120 (6D380 / 2715E) parts: good
Factory standard engine — you entered “Ford Lehman 120”
Marinized by Lehman from the Ford of England 'Dorset' 2715E six-cylinder (380 cu in) industrial/truck diesel; Ford built the Dorset base engines 1964–1984. Base-engine internals interchange with the Ford 2715E, and marine-specific parts (raw water pumps, heat exchangers, injection elbows, gaskets, lift pumps, air filters) are widely stocked. American Diesel Corp (founded by former Lehman people) still sells parts, publishes spare-parts lists and gives technical advice. Rebuilt and used 120s are also sold by salvage yards.
Parts sources: American Diesel Corp, Go2marine (Ford Lehman parts collection), Fred Warner Marine & Outdoors
Common problems (2)
-
Chronic oil leaks engine
Most 120s weep oil somewhere; owners often trace it to the rear of the engine near the heat exchanger (head/head gasket area) or to the drive seals of the gear-driven injection pump. Moderate oil use is treated as normal on these engines.trawlerforum.com · marineengine.com
-
Fuel leaks at injection pump, lift pump and return lines fuel
Slow diesel drips usually come from loose bleed screws or banjo washers, perished rubber injector return hoses, a failing lift-pump diaphragm, or worn internal seals in the Simms or CAV injection pump, which needs a pump shop to overhaul.yescenters.com
Maker’s service schedule (16)
| Engine oil & filter change | 200 hrs | “After first 15 hours running .... 1. Change Engine Oil ... Every 200 hours running ..... 17. Change engine and transmiss” — manufacturer (1986), marinedieselbasics.com |
| Fuel filters & water separator | 200 hrs | “Every 200 hours running ..... 18. Change all engine and fuel oil filters.” — manufacturer (1986), marinedieselbasics.com |
| Change oil in fuel injection pump | 50 hrs | “Every 50 hours running ...... 13. Check cleanliness of intake air filter. 14. Check (exchanger) zinc pencil. 15. Change” — manufacturer (1986), marinedieselbasics.com |
| Transmission fluid change | 200 hrs or 1 yr | “Change oil every 200 hours of operation or at least once each season under normal conditions” — manufacturer (1986), marinedieselbasics.com |
| Valve clearance check / adjust | 400 hrs | “After first 15 hours running .... 3. Adjust valve clearances. ... Every 400 hours running ..... 22. Adjust valve clearan” — manufacturer (1986), marinedieselbasics.com |
| Injector test / service | 400 hrs | “Every 400 hours running ..... 21. Remove and service injectors.” — manufacturer (1986), marinedieselbasics.com |
| Engine pencil zincs | 50 hrs | “After first 15 hours running .... 4. Check (exchanger) zinc pencil. ... Every 50 hours running ...... 14. Check (exchang” — manufacturer (1986), marinedieselbasics.com |
| Drive belts inspect / replace | 200 hrs | “After first 15 hours running .... 5. Adjust belt tension. ... Every 200 hours running ..... 16. Adjust belt tension.” — manufacturer (1986), marinedieselbasics.com |
| Air filter / intake silencer | 50 hrs | “After first 15 hours running .... 8. Check cleanliness of intake air filter. ... Every 50 hours running ...... 13. Check” — manufacturer (1986), marinedieselbasics.com |
| Clean fuel lift pump | 200 hrs | “Every 200 hours running ..... 19. Clean fuel lift pump.” — manufacturer (1986), marinedieselbasics.com |
| Clean injection pump cover filter | 200 hrs | “Every 200 hours running ..... 20. Clean injection pump cover filter.” — manufacturer (1986), marinedieselbasics.com |
| Remove raw water pump and check drive coupling | 400 hrs | “Every 400 hours running ..... 23. Remove raw water pump and check drive coupling. Place dab of grease on coupling halves” — manufacturer (1986), marinedieselbasics.com |
| Adjust idling speed (if required) | 400 hrs | “After first 15 hours running .... 10. Adjust idling speed (if required). ... Every 400 hours running ..... 24. Adjust id” — manufacturer (1986), marinedieselbasics.com |
| Check engine/propeller shaft alignment | 6 mo | “After first 15 hours running .... 9. Check engine/propeller shaft alignment. (twice annually, minimum).” — manufacturer (1986), marinedieselbasics.com |
| Replace Borg Warner transmission oil cooler | 1,200 hrs | “Suggested replacement is at 1200 hours.” — manufacturer, img1.wsimg.com |
| Inspect drive damper | 2,500 hrs | “Inspect your drive damper if you have more than 2500 hours on the engine.” — manufacturer, img1.wsimg.com |
Service part numbers (3)
| Raw-water impeller | Jabsco 1210-0001 | “6D380 5850-0001 040 3/4" NPT Flange SK33 3298 1210-0001” — manufacturer, marineengine.com · “Breakdown of 2C48 Pump ... 9 1 1210-0001 IMPELLER” — manufacturer, marinesurveyorontario.com |
| Raw-water pump kit original 2C45 pump (Jabsco 5850-0001) |
Jabsco SK33 | “6D380 5850-0001 040 3/4" NPT Flange SK33 3298 1210-0001” — manufacturer, marineengine.com |
| Raw-water pump kit Lehman 2C48 replacement pump (Jabsco 10950-2401 type) |
Jabsco SK239 | “Service Kit SK239 - Comprising Key 7/8/9/17” — manufacturer, marinesurveyorontario.com |
From the engine maker’s parts lists, or two independent parts dealers. Numbers change with serial number and get superseded — check yours before ordering.
Ford Lehman 135 / SP135 (2725E) parts: good
Factory standard engine — you entered “Ford Lehman SP135 (Super 135)”
Based on the later Ford 'Dover' 2725E 6.2 L naturally aspirated six (Ford built the Dover series 1982–1994, then Otosan/Dovertech to 2005). Parts are sold by the same Lehman specialists as the 120; American Diesel lists spare-parts sheets and Go2marine stocks cooling parts, heat exchangers and elbows for the 135. Do not assume 120 (2715E) and 135 (2725E) internals interchange.
Parts sources: American Diesel Corp, Go2marine (Ford Lehman parts collection)
Maker’s service schedule (14)
| Engine oil & filter change | 200 hrs | “Every 200 hours of operation ..... Change Engine Oil & Filter. And Transmission Oil.” — manufacturer (1987), marinedieselbasics.com |
| Fuel filters & water separator | 200 hrs or 1 yr | “should be replaced once each season or at least each 200 hours (which ever comes first) under normal conditions” — manufacturer (1987), marinedieselbasics.com |
| Raw-water pump impeller | 200 hrs | “Every 200 hours of operation ..... Replace raw water pump impeller.” — manufacturer (1987), marinedieselbasics.com |
| Coolant replacement & freeze-point test | 1,200 hrs | “Every 1200 hours of operation ..... Flush cooling system. Replace anti-freeze.” — manufacturer (1987), marinedieselbasics.com |
| Exhaust mixing elbow inspection | 200 hrs | “Every 200 hours of operation ..... Check exhaust components for leaks.” — manufacturer (1987), marinedieselbasics.com |
| Transmission fluid change Borg Warner gearbox | 200 hrs or 1 yr | “Change oil every 200 hours of operation or at least once each season under normal conditions” — manufacturer (1987), marinedieselbasics.com |
| Transmission fluid change PRM/Newage gearbox | 200 hrs | “After 25 hours running: Drain all oil from the gearbox and refill with one of the recommended lubricants.” — manufacturer (1987), marinedieselbasics.com |
| Transmission fluid change Twin Disc gearbox | 1,000 hrs or 6 mo | “The period between oil changes is 1000 hours of operation or 6 months, whichever occurs first.” — manufacturer (1987), marinedieselbasics.com |
| Check idling speed | 200 hrs | “Every 200 hours of operation ..... Check idling speed, adjust if required.” — manufacturer (1987), marinedieselbasics.com |
| Check coolant and oil hoses | 200 hrs | “Every 200 hours of operation ..... Check condition of all coolant and oil hoses.” — manufacturer (1987), marinedieselbasics.com |
| Check engine mount bolts | 200 hrs | “Every 200 hours of operation ..... Check all engine mount bolts.” — manufacturer (1987), marinedieselbasics.com |
| Replace thermostats | 3,600 hrs | “Every 3600 hours of operation ..... Replace thermostats.” — manufacturer (1987), marinedieselbasics.com |
| Replace Borg Warner transmission oil cooler Borg Warner gearbox | 1,200 hrs | “Suggested replacement time is at 1200 hours.” — manufacturer, img1.wsimg.com |
| Inspect drive damper | 2,500 hrs | “Inspect your drive damper if you have more than 2500 hours on the engine.” — manufacturer, img1.wsimg.com |
Service part numbers (9)
| Oil filter engines built before the 1987 change (original filter) |
Lehman 2N50 | “11 1 2N50 FILTER (Engine Oil Cooler Assembly D196/D197, SP90 / 135)” — manufacturer, marinesurveyorontario.com |
| Oil filter 1987-on engines (larger capacity, revised fitment) |
Lehman 2N53 | “DURING 1987 A NEW OIL FILTER OF LARGER CAPACITY ... THIS IS PART No. 2N53” — manufacturer, marinesurveyorontario.com · “Oil Filter 2N53 LM - P12-R105 P11-88” — dealer, lancingmarine.com |
| Fuel filter | Ford 6149717 × 2 | “2 ALL 2 6149717 FUEL FILTER ELEMENTS” — manufacturer, marinesurveyorontario.com |
| Raw-water impeller | Jabsco 1210-0001 | “Breakdown of 2C48 Pump ... 9 1 1210-0001 IMPELLER” — manufacturer, marinesurveyorontario.com |
| Raw-water pump kit | Jabsco SK239 | “Service Kit SK239 - Comprising Key 7/8/9/17” — manufacturer, marinesurveyorontario.com |
| Drive belt | Lehman 2B209 | “15 1 2B209 VBELT (Alternator Assembly D144, M/N)” — manufacturer, marinesurveyorontario.com · “Alternator Accessory Drive V-Belt 2B209 2B209 - P11-51” — dealer, lancingmarine.com |
| Air filter | Lehman 1F7 | “12 1 1F7 FOAM ELEMENT (Plenum Chamber / Air Filter Assembly D1125, SP135)” — manufacturer, marinesurveyorontario.com · “Air strainer to replace 2H75 & 1F7 (PF136) (Whilst stocks last)” — dealer, lancingmarine.com |
| Zinc / anode | Lehman EM21A | “25A 1 EM21A ZINC ANODE (Heat Exchanger Assembly D882/D883, SP135)” — manufacturer, marinesurveyorontario.com · “Anodes EM21A (Pack of 5) - - P11-18” — dealer, lancingmarine.com |
| Thermostat | Lehman 2C35 | “11 1 2C35 THERMOSTAT ... Modified / 12 1 1541317 GASKET” — manufacturer, marinesurveyorontario.com |
From the engine maker’s parts lists, or two independent parts dealers. Numbers change with serial number and get superseded — check yours before ordering.
Model sources (11)
hmy.com · trawlerforum.com · forums.sailinganarchy.com · pacificyachting.com · soundingsonline.com · trawlerforum.com · his.com · denisonyachtsales.com · denisonyachtsales.com · soundingsonline.com · yachtr.com
Other Kadey-Krogen models
- Kadey-Krogen 36 Manatee 1984–1992
- Kadey-Krogen 39 1998–2008
- Kadey-Krogen 48 North Sea 1996–2010
Researched from public sources. Spotted an error? The sources are listed above — tell us what they got wrong.