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1987 Ocean Alexander 420Sold

$125,000

Used
We will let you know when another 1987 Ocean Alexander 420 is available in Olympia, WA

Boat in Olympia, WA 98501 US

builtBuilt in 1987
Year the boat was built
model

420

Boat model
engine

2 Engines (2x Detroit)

Engine type and count
length

42 feet

Overall boat length
fuel

Diesel

Fuel type
material

Fiberglass/Reinforced

Hull material
Nominal Length
42ft
Length Overall
42ft
Beam
13.92ft
Max Draft
3.17ft
Displacement
28000lb
Fresh Water Tanks
150gal
Fuel Tanks
300gal
Holding Tanks
50gal
Windlass
electric-windlass
Hull Material
fiberglass
Engine 1
Engine Make
Detroit
Engine Model
8.2L
Total Power
250hp
Engine Hours
2900
Engine Type
inboard
Fuel Type
diesel
Engine Year
1987
Drive Type
direct
Engine 2
Engine Make
Detroit
Engine Model
8.2L
Total Power
250hp
Engine Hours
2900
Engine Type
inboard
Fuel Type
diesel
Engine Year
1987
Drive Type
direct
Cockpit Shower
Cockpit Table
Electric Bilge Pump
Microwave Oven
Hot Water
Compass
Hard Top
Boat History

Original owners kept the boat in a boathouse in Portland (Columbia River Yacht Club).

Sellers purchased in 1999. Boat has been boathouse kept ever since at the Olympia Yacht Club.

When purchased by Seller, engines had 1000 hours of use.


Upgrades and Improvements

Supplemental coolant tanks and temporary sensors were added. 

All hoses were replaced

New aluminum risers were installed. All installed in 2018. 

Installed bow thruster (at approximately$14,000 cost) in 2005 (see No. 4 above). 

Air breather added to turbo system. 

Battery, charging and electronics all upgraded from original. 

Also added rudder angle indicator and more sensitive engine overheat sensors.

Engines have never run at temperature higher than 150 degrees Fahrenheit.

Fuel Consumption

Owner states at hull speed (approx. 8 knots), both engines together consume +/- 5 gallons of fuel. This

is at approximately 1500 rpms. Boat is capable of 15+ knots at approximately 2600 rpms. This is at slack

current.

Electronics

3-year old “high-end” ICOM VHF, Model IC-M 506 with many functions including AIS

3-year old Garmin Model 730 combo radar and chart plotter with depth sounder.

Boat still retains its older Garmin chart plotter and stand-alone Garmin depth sounder

Additionally, a separate Nobeltec/navigation system supported by laptop computer with Nobeltec

software.

Electrical

The house bank is 4 - 145 Trojan 6-volt batteries. They are controlled by a Magnum

inverter/charger with an external monitoring system. 

The genset and engines each have their own

batteries, charged by an independent battery charger.

Gen Set: 8 kw Westerbeke. Shows 3100 hours. Was rebuilt at 2900 hours in 2005.

Most recently serviced August 2025.

Maintenance and Care of Boat


Main engines and genset oil and filters changed annually in fall as well as fuel filters. Primary Racor fuel filters

and turbo air filters, changed as needed.

Hull is cleaned and zincs replaced by diver semi annually.

Transmission oil kept “topped off” as needed and changed every 18 months. Biodorf always added to fuel as

well as additive to increase lubrication.

Tender and Davit

Tender: 10’ AB Inflatable with fiberglass bottom. Has steering station with seating and controls.

15 hp Yamaha outboard-2 stroke. Outboard purchased new in 2010.

Weaver-Leaver Swim step dinghy attachment system with electric raising and lowering

Disclaimer

The Company offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to prior sale, price change, or withdrawal without notice.

Price History

DateEventPrice
8/22/25No change$139,000
8/21/25Price decreased$125,000(-10.1%)

Overview from around the web 1987 Ocean Alexander 420

Customers praise the 1987 Ocean Alexander 420 for its classic design and solid craftsmanship

Many highlight its spacious and comfortable interior, making it ideal for extended cruising. The boat’s sturdy build and reliable performance are often noted, along with its timeless style that appeals to enthusiasts of vintage yachts. Owners appreciate the ample deck space and functional layout, which provide both practicality and enjoyment on the water. Some mention that with proper maintenance, the Ocean Alexander 420 remains a dependable and elegant vessel for both leisure and adventure.

The Biggest Pros and Cons

The 1987 Ocean Alexander 420 is a classic motor yacht known for its solid construction and timeless design. Here are some pros and cons to consider:

Pros

Sturdy Build: Ocean Alexander yachts are renowned for their robust fiberglass construction, offering durability and longevity.

Spacious Layout: The 420 model provides ample living space with comfortable accommodations, including multiple cabins and a sizable salon.

Classic Styling: The 1987 design features elegant, traditional lines that appeal to enthusiasts of classic yachts.

Good Seaworthiness: Designed for offshore cruising, the vessel handles well in various sea conditions.

Quality Craftsmanship: Attention to detail and quality materials were used throughout, reflecting the brand's reputation.

Cons

Older Systems: Being a 1987 model, onboard systems such as electronics, plumbing, and HVAC may be outdated and require upgrades or maintenance.

Fuel Efficiency: Larger displacement and older engine technology can result in higher fuel consumption compared to modern yachts.

Maintenance Intensive: Older vessels often need more frequent upkeep, including hull, engine, and interior maintenance.

Limited Modern Amenities: The yacht may lack some contemporary conveniences and design features found in newer models.

Availability of Parts: Finding replacement parts for original equipment may be challenging due to the boat's age.

Made For

The 1987 Ocean Alexander 420 is ideal for boating enthusiasts seeking a classic, well-crafted yacht that combines timeless design with reliable performance. It suits those who appreciate spacious accommodations for comfortable cruising, whether for family outings, extended weekend getaways, or coastal adventures. This vessel is perfect for owners who value quality craftsmanship, solid construction, and a vessel capable of handling both leisurely cruises and more spirited voyages on the water.

Finance your dream boat!

Use our boat payment calculator to estimate monthly payments for 1987 Ocean Alexander 420. Enter your down payment, choose a loan term, and adjust the interest rate to see an instant payment estimate — ideal if you're calculating boat payments before you enquire. Wondering how much does a Aft Cabin cost in today's market, or how much does a Ocean Alexander cost for similar models? This boat financing calculator helps you compare scenarios in seconds, whether you're considering used boat financing or a new purchase.
Monthly payment
$1,418.71/mo
$
$
Loan amount$ 125,000
OR
%

Finance your dream boat!

Use our boat payment calculator to estimate monthly payments for 1987 Ocean Alexander 420. Enter your down payment, choose a loan term, and adjust the interest rate to see an instant payment estimate — ideal if you're calculating boat payments before you enquire. Wondering how much does a Aft Cabin cost in today's market, or how much does a Ocean Alexander cost for similar models? This boat financing calculator helps you compare scenarios in seconds, whether you're considering used boat financing or a new purchase.
Monthly payment
$1,418.71/mo
$
$
Loan amount$ 125,000
OR
%

Contact NW Yachtnet - Olympia

700 Marine Drive NE, Suite 105, Olympia, WA, 98501

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Address

700 Marine Drive NE
Suite 105
Olympia, WA 98501

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