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Blackfin 29 Combi

Built 1983–1998 by Blackfin Yacht Corp.

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About the Blackfin 29 Combi

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 Blackfin 29 Combi
Illustration, not a photo of this model. AI-generated illustration of a typical convertible sportfisherman.
Built
1983–1998
Builder
Blackfin Yacht Corp.
Length
32.5 ft
Beam
10.5 ft
Draft
2.83 ft
Displacement
10,025 lb
Hull
fiberglass
Hull / keel
planing
Propulsion
inboard
Fuel
varies by year
Bow thruster
not fitted
Stern thruster
not fitted
Tank capacities — where the figures come from
  • Fuel varies by year
    “Fuel Tank: 250 Gallons” — broker listing (1992), yachtr.com · “different main fuel tank sizes over the years from 180 to 256 gallons, with only the last 5-7 years ... having either th” — search excerpt (180-256 over 1983-1998; 232 or 256 in th), thehulltruth.com · “That boat carries 265 gallons of fuel - 245 useable” — search excerpt, thehulltruth.com
    Owners report four or five main-tank sizes (180 to 256 gal) over the run, plus optional saddle tanks (about 39 gal each). Our earlier 250 matches a 1992 listing but isn't a single standard for 1983-98.
  • Water unknown
    “Fresh Water: 20 Gallons” — broker listing (1992), yachtr.com
    Our earlier 30 gal (from the HMY powerboat guide) vs 20 in a 1992 listing, whose holding figure is 30, so our earlier water and holding figures may have been swapped. No builder figure was checked.
  • Holding unknown
    “Holding Tank: 30 Gallons” — broker listing (1992), yachtr.com
    Our earlier 20 gal vs 30 in a 1992 listing (possibly swapped with the water figure).
  • Water heater unknown
    David Pascoe's boat review and a broker listing don't mention a water heater; no builder document was found.

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 not fitted
    No builder list, review or listing mentions a thruster. Our earlier figure of none is plausible for a twin-engine 29-footer but has no source.
  • Stern thruster not fitted
    Nothing found either way.
  • Steering unknown
    The reviews found (David Pascoe's survey review and a used-boat review) don't describe the steering system, and no builder brochure or equipment list was found.

Thrusters and steering are often replaced — check the units on your boat before ordering parts.

Sources disagree on hp of Cummins diesel, which engine was standard, hp of gas engine, water tank, holding tank — left blank rather than guessed.

Heavily built solid-glass deep-V (22 deg). LOA 32.5 ft includes pulpit. Weight 10,025 lb gas / 12,120 lb diesel. Updated 1995 as the 29-2 Combi (new bridge deck, windshield, integral pulpit). Excellent engine access under engine boxes.

Engines fitted

Boats of the same model can differ — check which engines yours actually has before ordering parts.

Generator

No builder, review or listing source found naming a generator for the 29 Combi.

Known problems for this model

No well-sourced problem reports found yet.

Engines & parts

Cummins 6BT / 6BTA 5.9 parts: good

Factory optional engine — you entered “Cummins 6BTA 5.9 (listed as 5.6BTA-M3)”

Mechanically injected 5.9 L inline six from the Cummins B-series truck/industrial family, so base-engine parts are everywhere. Cummins still sells factory ReCon (remanufactured) marine 6BT/6BTA engines (152–210 hp ratings) with a 2-year/2000-hour warranty. Seaboard Marine is the best-known marine specialist, selling aftercooler/heat-exchanger service kits, upgraded raw water pumps and technical guidance; TAD also sells Cummins packages.

Parts sources: Seaboard Marine, Cummins (ReCon 6BT/6BTA), Diesel Pro Power

Common problems (2)
  • Aftercooler corrosion letting seawater into the intake cooling
    On the turbo-aftercooled 6BTA the seawater-cooled aftercooler core has vertical tubes and an aluminum housing that corrodes from condensate; a leak can put salt water into the cylinders and wreck the engine. Owners pull, clean, grease and pressure-test the core every few years and fit new O-rings.
    trawlerforum.com · sbmar.com
  • Heat exchanger and aftercooler service cooling
    Routine seawater-side service (O-rings, gaskets, zincs) is a recurring owner job; kits are sold for it and refilling coolant without trapping air is a common question.
    sbmar.com · sbmar.com
Service part numbers (5)
Oil filter Cummins 3937743
“| Oil Filter | 3937743 |” — dealer, marineenergy.com.au · “Cummins Oil Filter 3937743 Spin-on type, 3.66" outside diameter, 6.95" height” — dealer, dieselpro.com
Fuel filter
6BT 5.9 210 hp (CPL 742)
 Fleetguard FF5052
Replaces FF42000, FS1251
“on-engine fuel filter with drain for all 6BT 210 B’s (CPL 742). Replaces the FF42000, FS1251.” — dealer, sbmar.com · “Cummins 6BT Fuel Filter 3931063 FF5052” — dealer, marineenergy.com.au
Fuel filter
late 6BTA (also late 4BTA and 6CTA)
 Fleetguard FF5285
“Fleetguard FF5285 Fuel Filter – late 4BTA 6BTA and 6CTA’s” — dealer, sbmar.com · “Cummins 6BTA Fuel Filter 3890017 FF5285 ... suits late model Cummins 6BTA's, 6CTA8.3-M” — dealer, marineenergy.com.au
Raw-water impeller
seawater pump with 1-1/4 in hose ports (Sherwood M70/M71 type, early 4BT/6BT)
 Sherwood 10615K
“Seawater Pump Impeller | **1-1/4" PORTS** 3908220 10615K” — dealer, marineenergy.com.au · “Cummins Marine Water Pump Impeller 10615K 2 9/16" diameter, 1 5/8" length” — dealer, dieselpro.com
Raw-water impeller
keyway-shaft pump, 2 in inlet / 1-3/4 in outlet, 11° offset flange (e.g. P1716/P1730 on 6BTA)
 Sherwood 17000K
“**2" inlet & 1-3/4" outlet ports with 11° OFFSET flange** 17000K” — dealer, marineenergy.com.au · “Cummins Impeller for Key Shaft 17000K” — dealer, dieselpro.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 (3)

hmy.com · yachtsurvey.com · yachtr.com

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Other Blackfin models

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