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Known Issues

Ct 34 Known Issues

Common problems, survey red flags, and what to inspect before buying a Ct 34.

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These are the most commonly reported problems on the Ct 34, compiled from surveys, owner reports, and marine forums. Use this list as a pre-purchase inspection checklist — especially the high-severity items.

9
Known Issues
5 High 4 Medium
Accommodations
Medium
The interior joinery on CT 34s used teak and holly veneer over plywood. Teak trim is generally durable, but the underlying plywood substrate in settee bases, the chart table, and the galley area is prone to delamination and rot when bilge water or deck leaks are present, which is common on boats of this era.
Electrical
High
Boats imported in the 1970s and early 1980s were wired with substandard wire gauge and non-tinned copper wiring that corrodes readily in the marine environment. Most CT 34s of this age require a full electrical rewire, and the original wiring should be treated as a fire hazard until inspected by a marine electrician.
1970–1982 models
Engine
Medium
Many CT 34s were fitted with the Perkins 4-108 diesel. While generally robust, the raw water cooling system impeller housing and heat exchanger on aging examples is frequently corroded or leaking. The engine beds on some boats show soft or delaminated glasswork from years of bilge water exposure.
Hull/Deck
High
The CT 34 was built with a balsa-cored deck in many sections. Ta Chiao's coring technique and resin application was inconsistent, and water intrusion around chainplates, stanchion bases, and deck hardware has led to widespread balsa rot in the core, sometimes extensively. Any deck survey should probe all hardware penetrations carefully.
High
The teak decks common on CT 34s were fastened with screws through the fiberglass deck, creating hundreds of potential water intrusion points. Over time, the bedding compound fails and water works into the balsa core below. Many owners have had to remove teak decks entirely and rebond or replace the core.
Medium
The hull-to-deck joint on Ta Chiao boats of this era was typically an inward-turned flange bonded and pop-riveted, then covered with a toerail. Sealant failure is extremely common after 30–40 years, allowing water ingress along the entire joint. Separation of the joint can be difficult to detect without removing the toerail.
Medium
Portlight and window frames on the CT 34 are often bronze or aluminum set in teak surrounds. Sealant failure is nearly universal on older examples, and water has often tracked into the cabin side laminate. Check for soft spots in the fiberglass around every opening.
Keel
High
The CT 34 uses a long keel with an external lead ballast section attached with keel bolts. The bilge area around the keel sump is prone to standing water accumulation, which accelerates keel bolt corrosion. Bolts should be inspected and tested for integrity, as replacement is a major undertaking on this hull.
Rigging
High
Chainplate attachment on the CT 34 passes through the balsa-cored deck without adequate backing or sealing in many examples. The combination of deck flex and water intrusion at these points has caused chainplate tabbing to delaminate from the hull interior. Inspection of the interior chainplate attachment points and associated glasswork is essential.
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