CHB 34 Double Cabin
Built 1972–1985 by CHB (Chung Hwa Boat Building, Taiwan)
About the CHB 34 Double Cabin
Researched from public sources for this model. Any individual boat may have been modified or repowered — confirm before relying on any figure.
- Built
- 1972–1985
- Builder
- CHB (Chung Hwa Boat Building, Taiwan)
- Designer
- Ed Monk
- Length
- 33.5 ft
- Waterline
- 30.25 ft
- Beam
- 11.75 ft
- Draft
- 3.5 ft
- Displacement
- 17,000 lb
- Hull
- fiberglass
- Hull / keel
- semi-displacement
- Propulsion
- inboard
- Fuel
- 300 gal
- Water
- 150 gal
- Holding
- 40 gal
Same boat as the Marine Trader 34 Double Cabin (imported by Marine Trader; also sold as La Paz and Eagle). Over 1,600 built per the BoatUS notes. After 1985 the deck and deckhouse became one-piece fiberglass; flybridge revised 1991; teak window frames dropped 1992. Single 120/135 hp Lehman cruises 6-7 knots at 2-3 gph. The Ed Monk design credit comes from Pacific Yachting's history of the Marine Trader 34. Over 1,600 built (BoatUS notes on HMY).
Known problems for this model
-
Teak decks fastened into balsa sub-deck deck
Until 1985 teak planks were screwed through the fiberglass into a balsa-cored sub-deck, a constant source of leaks and wet core.hmy.com
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Plywood deckhouse before 1975 deck
Pre-1975 boats have a glass-sheathed plywood cabin house that rots where water gets past the sheathing.hmy.com
-
Welded steel tanks fuel
Taiwan trawlers of this period often have welded steel tanks that leak at corners and seams; plan on inspection and possible cut-out replacement.pacificyachting.com
-
Wet or rotten stringers hull
Wood-cored stringers that have been drilled for wiring or plumbing can soak up bilge water and rot; have them moisture-tested.pacificyachting.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
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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
Ford Lehman 135 / SP135 (2725E) parts: good
Factory standard engine — you entered “Ford Lehman 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)
Model sources (2)
Other CHB models
- CHB 38 Double Cabin 1978–1985
- CHB 42 Europa
Researched from public sources. Spotted an error? The sources are listed above — tell us what they got wrong.