Newport 30 Mk II
About the Newport 30 Mk II
Researched from public sources for this model. Any individual boat may have been modified or repowered — confirm before relying on any figure.
- Builder
- Capital Yachts
- Designer
- Gary Mull
- Length
- 30 ft
- Waterline
- 26.5 ft
- Beam
- 10.67 ft
- Draft
- 4.75 ft
- Displacement
- 8,000 lb
- Ballast
- 2,600 lb
- Hull
- fiberglass
- Hull / keel
- fin keel
- Rig
- sloop
- Propulsion
- inboard
- Fuel
- 20 gal
- Water
- 60 gal
- Water heater
- often added later
- Stern thruster
- not fitted
- Steering
- tiller
Tank capacities — where the figures come from
-
Fuel 20 gal
“fuel capacity of 20” — search excerpt (1974 Mk II), boattrader.com · “The 30-gallon fuel tank is located beneath the starboard quarter berth” — review (diesel boats (likely Mk III)), goodoldboat.comA listing for a 1974 Mk II with an Atomic 4 gas engine repeats 20 gal. Good Old Boat's review describes a diesel boat with a 30 gal tank, probably a later version; the Newport 30 changed several times between 1973 and the 1980s. No builder figure was found.
-
Water 60 gal
“water capacity of 60” — search excerpt (1974 Mk II), boattrader.com · “70-gallon potable water tank” — review (diesel boats (likely Mk III)), goodoldboat.comA listing repeats 60 gal for a 1974 Mk II; Good Old Boat gives 70 gal for the boat it reviewed, without saying which version.
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Water heater often added later
“While many Newport 30s have been upgraded to include pressurized hot and cold water, it came standard with manual” — review, goodoldboat.comGood Old Boat's Newport 30 review (covering the Gary Mull original and Mk II) says the boat came with manual water pumps as standard and that many have since been upgraded to pressurized hot and cold water. No heater size given.
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
No source mentions a thruster on the Newport 30.
-
Stern thruster not fitted
Nothing was found either way; our earlier figure of none appears to be an assumption.
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Steering tiller
“The Newport 30 featured a T-shaped cockpit with tiller steering as standard equipment. Wheel steering was offered as an” — review, goodoldboat.com · “Newport 30-3 ... modified for cruising with its mast moved further aft, wheel steering replacing the earlier tiller” — search excerpt (1986 (Mk III)), en.wikipedia.orgA tiller was standard with a wheel optional on the Newport 30 and 30 Mk II (Good Old Boat); the later Mk III (1986) made wheel steering standard. The maker of the optional wheel hardware wasn't found.
Thrusters and steering are often replaced — check the units on your boat before ordering parts.
Sources disagree on first year, last year, engines — left blank rather than guessed.
The Newport 30 ran in three versions: Mk I (1968-73 per Wikipedia, 1973-75 per Good Old Boat), Mk II, and Mk III (1984 per Wikipedia, 1986 per Good Old Boat). Mk II start and end years are disputed (see disputed). The Mk II got a taller mast and shorter boom to rate as an IOR 3/4 tonner; also called Phase II. Shoal keel 3.75 ft optional. Later Mk II boats have a vinyl headliner allowing bulkheads to be tabbed to the deck; earlier ones have a molded liner. Good Old Boat describes the hull as solid glass.
Engines fitted
-
Atomic 4 (Universal) — gas, single
standard
Wikipedia gives the Newport 30-2 (Mk II, from 1974) a Universal Atomic 4 gas engine but rates it 13 hp, while giving the Mk I's Atomic 4 as 30 hp; the 13 hp figure looks wrong, so hp is left null. The Mk III (from 1984) moved to a Universal M18 diesel.Sources: en.wikipedia.org
- Atomic 4 (Universal) — gas standard
Boats of the same model can differ — check which engines yours actually has before ordering parts.
Generator
No source mentions a generator for the Newport 30 Mk II.
Known problems for this model
-
Osmotic blistering hull
Owners have reported moderate to severe blistering; ask what was done to any boat with a perfect-looking bottom and have a surveyor check.goodoldboat.com
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Hull-to-deck joint damage deck
The joint is riveted on roughly 6-inch centers with an outward flange that is easily damaged in hard dockings and then leaks; look for distorted toerail sections, as repair is difficult.goodoldboat.com
-
Hidden galvanized keel bolts hull
The lead keel is held by galvanized iron bolts encased in resin inside the keel recess, so they cannot be inspected and can corrode if water gets in; check the keel joint for grounding damage and cracks.goodoldboat.com
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Cored deck with plywood in load areas deck
The deck uses a synthetic core with marine plywood substituted where extra strength was needed, so poorly bedded hardware can lead to wet, rotted core.goodoldboat.com
Engines & parts
Universal Atomic 4 parts: good
Factory standard engine — you entered “Atomic 4 (Universal)”
Tens of thousands were built (sources say from 40,000 to 50,000). Despite being out of production for decades, the engine is well supported: Moyer Marine sells parts, rebuilt engines, fuel pump rebuilds and exhaust parts, and hosts an owners' forum; Old Lyme Marina and others also supply parts, and electronic ignition upgrades are available.
Parts sources: Moyer Marine
Common problems (3)
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Raw-water cooling scale and corrosion cooling
Most Atomic 4s are raw-water cooled, so the block scales up and corrodes, especially in salt water; cranking without starting can also flood the engine with seawater through the exhaust.goodoldboat.com · moyermarineforum.com · keelindex.com
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Gasoline vapor fire/explosion risk fuel
Gasoline vapor is heavier than air and settles in the bilge, so ventilation, blower use and shutting the fuel valve (a stuck carburetor float can overflow) matter.goodoldboat.com
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Ignition and fuel system faults electrical
Points, condenser, cap and wires, plus gummed carburetors and contaminated fuel, are the most common reasons an Atomic 4 won't run well.keelindex.com · goodoldboat.com
Maker’s service schedule (9)
| Engine oil & filter change | 50 hrs | “3. FIFTY HOUR CHECK a. Using sump pump, remove all oil from crankcase. Refill with a good grade oil as specified in Tabl” — manufacturer, westerbeke.com |
| Fuel filters & water separator | 50 hrs | “e. Clean fuel pump strainer.” — manufacturer, westerbeke.com |
| Heat exchanger & oil cooler cleaning | 50 hrs | “b. Inspect oil cooler and remove any accumulation of grit or dirt.” — manufacturer, westerbeke.com |
| Clean flame arrestor | 100 hrs | “b. Inspect flame arrestor to be sure air passages are clean and free from oil. If dirty remove and wash with kerosene.” — manufacturer, westerbeke.com |
| Check clutch (reverse gear) adjustment | 100 hrs | “4. ONE HUNDRED HOUR CHECK ... c. Check adjustment of clutch.” — manufacturer, westerbeke.com |
| Valve clearance check / adjust | 150 hrs or 1 yr | “5. ONE HUNDRED FIFTY HOUR CHECK a. Check valve tappet adjustment.” — manufacturer, westerbeke.com |
| Spark plugs inspect / replace | 150 hrs | “b. Remove, clean, and reset spark plugs.” — manufacturer, westerbeke.com |
| Transmission fluid change Universal V-drive unit (V-drive installations only; the standard reverse gear shares engine oil) | 500 hrs | “(2) After the first 50 hours of operation, drain unit and refill ... (3) Change lubricant every 500 hours of operation.” — manufacturer, westerbeke.com |
| Complete overhaul | 3,000 hrs | “At the end of three thousand hours of operation the engine should be completely overhauled.” — manufacturer, westerbeke.com |
Service part numbers (8)
| Oil filter optional add-on oil filter (not standard equipment) |
Universal 276236 | “2 Element or Cartridge 1 276236 (Oil Group, Oil Filter, Not Standard Equipment)” — manufacturer, westerbeke.com |
| Raw-water impeller Oberdorfer N202M-03 / N202M-07 replacement raw-water pump (Universal pump 295625) |
Oberdorfer 6593 | “5 Impeller 6593 6593 6593 6593 6593 1 (N202M, N202M-03, N202M-07 parts list)” — manufacturer, pumpsandpartsonline.com · “Impeller : Catalog # 6593, Impeller” — dealer, pumpagents.com |
| Raw-water pump kit Oberdorfer N202M-03 / N202M-07 raw-water pump |
Oberdorfer 10725 | “REPAIR KIT N202M N202M-03 N202M-07 10725” — manufacturer, pumpsandpartsonline.com · “Catalog # 10725, Repair Kit, includes O-Ring, Snap Ring, Impeller, 2 x Lip Seal” — dealer, pumpagents.com |
| Drive belt alternator belt (Prestolite and Motorola alternators) |
Universal 239387 | “19 Belt 1 239387 (12 Volt - Motorola 51 Amp Alternator)” — manufacturer, westerbeke.com |
| Spark plug | Universal 273276 × 4 | “8 Spark plugs, champion 4 273276” — manufacturer, westerbeke.com |
| Thermostat late style, from 1967 / serial #79476 (Holley 145 F, on cylinder head) |
Universal 200206 | “12 Thermostat Kit 1 200206 consists of 262278 and 261601” — manufacturer, westerbeke.com |
| Thermostat Dole type, before serial #79476 (on manifold) |
Universal 200207 | “13 Kit, Thermostat (consists of 275965 & 261144) 1 200207” — manufacturer, westerbeke.com |
| Zinc / anode fresh-water-cooled engines only (Universal heat-exchanger kit) |
Universal 299760 | “23 zinc pencil 1 299760 (Cooling, Fresh Water System, after serial #79476)” — manufacturer, westerbeke.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.
Sources disagree on first year, last year, number built — left blank rather than guessed.
Model sources (5)
sailboatdata.com · goodoldboat.com · en.wikipedia.org · sailboatdata.com · newport30.org
Other Newport models
- Newport 28 / 28 II 1974–1987
Researched from public sources. Spotted an error? The sources are listed above — tell us what they got wrong.