Vessel Guide

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Uniflite 42 Double Cabin

Built 1971–1984 by Uniflite Inc. (Bellingham, WA)

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About the Uniflite 42 Double Cabin

Researched from public sources for this model. Any individual boat may have been modified or repowered — confirm before relying on any figure.

Illustration of a Uniflite 42 Double Cabin
Illustration, not a photo of this model. AI-generated illustration of a typical flybridge motor yacht.
Built
1971–1984
Builder
Uniflite Inc. (Bellingham, WA)
Length
42 ft
Beam
14.75 ft
Draft
3.75 ft
Displacement
35,000 lb
Hull / keel
planing
Propulsion
inboard
Fuel
500 gal
Water
160 gal
Bow thruster
none
Stern thruster
none

Early raised full-width aft-deck motor yacht. Fuel 400 gal until 1977, 500 after. Post-1978 boats have a stall shower forward. Molds later built as the Chris-Craft 425/426/427 Catalina. Sturdy build and comfortable ride per HMY.

Known problems for this model

Engines & parts

Detroit Diesel 6-71 (inline, N / T / TI) parts: good

Factory standard engine — you entered “Detroit Diesel (J&T) 6-71”

Two-stroke 71-series engine with a huge commercial, bus and marine population; basic engine parts and complete overhaul kits (liners, pistons, injectors, blowers, bearings, gaskets) are cheap and widely available from Diesel Pro Power, Highway and Heavy Parts and others. Some marine-specific parts (coolers, manifolds) are harder to find. Designed to be rebuilt in-frame repeatedly; naturally aspirated engines with good care have been reported past 15,000 hours, turbo versions more like 3,000–5,000.

Parts sources: Diesel Pro Power (Detroit Diesel parts), Highway and Heavy Parts (Series 71)

Common problems (2)
  • Oil leaks engine
    Owners describe 71-series Detroits as habitual oil leakers; chasing leaks with the right gaskets and sealants is a routine topic even on freshly rebuilt engines.
    trawlerforum.com · cruisersforum.com
  • Noise and smoke exhaust
    Injector and exhaust noise is loud unless mufflers are well designed, and some smoke is typical of the two-stroke design.
    trawlerforum.com
Model sources (2)

hmy.com · nautipedia.it

Other Uniflite models

Researched from public sources. Spotted an error? The sources are listed above — tell us what they got wrong.