1977 Custom International Offshore 65

$399,000

Used

Boat in Anacortes, WA 98221 US

builtBuilt in 1977
Year the boat was built
model

International Offshore 65

Boat model
engine

2 Engines (2x Detroit)

Engine type and count
length

65 feet

Overall boat length
fuel

--

Fuel type
material

Fiberglass/Reinforced

Hull material
Nominal Length
65ft
Length Overall
67.67ft
Beam
18ft
Max Draft
6ft
Dry Weight
84000lb
Cruising Speed
7kn
Max Speed
11kn
Cabins
3
Heads
3
Fresh Water Tanks
600gal
Fuel Tanks
700gal
Hull Material
fiberglass
Hull Shape
displacement
Engine 1
Engine Make
Detroit
Engine Model
671
Total Power
310hp
Engine Hours
1862
Engine Type
inboard
Drive Type
v
Engine 2
Engine Make
Detroit
Engine Model
671
Total Power
310hp
Engine Hours
1862
Engine Type
inboard
Drive Type
v
Salon
  • 43” insigna Smart TV 
  • LG soundbar with base box 
  • Seth Thomas Clock and barometer 
  • Ample storage 
  • Wood floors 
  • Led ceiling lights 
  • 6 windows 
  • Wonderful natural light
Galley
  • GE Café Stainless steel 5 burner stove with Convection and warming drawer – full size 
  • GE Café Stainless steel dishwasher – full size 
  • GE Café Stainless steel microwave 
  • Samsung – Stainless steel refrigerator with double doors, snack drawer and drawer freezer 
  • Broan Trash compactor 
  • Stainless steel sink and faucet 
  • Dumbwaiter to upper deck 
  • Wood floors 
  • Led Ceiling lights 
  • Large window over sink 
  • Portlight window on Starboard side
Accommodations

Master State Room:

  • Full beam master 
  • Custom Queen bed with Teak build in drawers 
  • Cupboard and drawers through out the state room 
  • 2 lamps 
  • 2 over bed Led reading lights 
  • Custom teak port and starboard drawers 
  • Desk 
  • Built in shelving 
  • Satie 
  • On suite full head/shower/bathtub and vanity 
  • Drawers and Cupboards in Head   
  • Port and starboard walk-in closet 
  • 22 shelves in closet 
  • 4 hanging lockers in closet 
  • Linin closet 
  • Laundry closet

Guest State Room:

  • Single bunk 
  • Closet 
  • Under bed storage 
  • Vanity with storage 
  • On suite full head/shower/vanity 
  • Raritan – Fresh flush head 
  • Led lighting 

V Berth:

  • Two bunks 
  • Two cedar lined hanging closets 
  • On suite full head/shower/vanity
  • Masterflush Head  
  • 12V hatch fans 
  • (2) Dehumidifier Air purifier
  •  All new 12V and 120 electrical

Den:

  • L shape couch with under cushion storage 
  • GE Washer and Dryer 
  • Built in shelving 
  • 42” built in TV 
  • Soundbar with base box 
  • Popcorn popper 
  • Mini soda frig 
  • Dehumidifier 
  • Led lighting 
Helm
  • Large bench 
  • Leather Helm chair 
  • 2 Raymarine E120 monitors 
  • Dell 19” Monitor and computer 
  • Wireless computer keyboard and mouse 
  • Raymarine Wind gauge 
  • Raymarine Graphic multi display 
  • Hydraulic steering and controls 

Engine instruments:

  • Dual Compass 
  • 12 volt breaker panel 
  • Fireboy suppression system 
  • Magnum Inverter controls 
  • Icom IC-M56 VHF 

Under helm storage - plus access to deck storage Teak lined stairs to lower deck Teak stairs to upper deck Port and starboard doors to main level deck Led ceiling lights


Engines
  • Detroit 671 310hp at 2250 rpm with hours 
  • Detroit 671 310hp at 2250 rpm with hours 
  • Cruise speed 7-8 knots 
  • 1400 rpm = 6 gallons/hour 
  • Max speed 11 knots 
  • Capital with Walter V Drives  
Engine Room
  • Twin Detroit 671 Diesel Engines 
  • Capital transmissions with Walter V drives 
  • 2 Kohler 12 KW Generators 
  • Updated Dyno L16 house batteries 
  • Dyno batteries engine start bank 
  • Dyno battery generator start bank 
  • Stainless steel fuel tanks 350 gal each (2) 
  • Site tubes on each fuel tank 
  • Shine 2000-watt inverter 
  • 52-gal hot water heater 
  • 120 braker bank 
  • Engine and generator hour meters 
  • 2 large fire suppression tanks 
  • 3 Tool chests 
  • Lots of extra engine parts, filters, and supplies
Decks

Main Deck:

  • Large aft deck 
  • Fresh water washdown spigot 
  • Stainless steel ladder to upper deck 
  • Life ring 
  • Engine room hatch 
  • Stainless Steel Magma BBQ with cover 
  • Fish cutting board 
  • 50 amp outlet 
  • Port and starboard walk around 
  • Maxwell 2200 windless with foot controls 
  • Bruce Anchor Hatch to V Berth 
  • Hatch to forward storage

Top Deck:

  • Upper helm  
  • Raymarine E120 Monitor 
  • Engine instruments 
  • Dumb waiter to Galley 
  • Upper storage access  
  • Mast with GPS, Wind and Lights 
  • Teak table with 6 chairs 
  • 4 Aluminum lounge chairs 
  • 1000LB lift capacity crane with control unit 
  • Dinghy chocks



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
4/17/26Initial price$399,000

1977 Custom International Offshore 65 Video Tours

Overview from around the web 1977 Custom International Offshore 65

Customers praise the 1977 Custom International Offshore 65 for its robust construction and classic offshore racing design

Many highlight its impressive sailing performance, noting the boat’s stability and handling in various sea conditions. Owners appreciate the spacious and well-thought-out interior layout, which combines functionality with traditional craftsmanship. The vessel’s timeless aesthetic and solid build quality are frequently mentioned as key reasons for its enduring appeal among sailing enthusiasts. Overall, feedback emphasizes the boat’s reliability, seaworthiness, and the unique experience it offers for both racing and cruising.

The Biggest Pros and Cons

The 1977 Custom International Offshore 65 is a classic yacht known for its robust construction and timeless design. Here are some pros and cons to consider:

Pros

Sturdy Build: Crafted with high-quality materials typical of the era, offering durability and reliability in offshore conditions.

Spacious Layout: The 65-foot length provides ample living and storage space, making it comfortable for extended voyages.

Classic Aesthetic: Elegant lines and traditional styling appeal to enthusiasts of vintage sailing yachts.

Proven Offshore Performance: Designed specifically for offshore cruising, it handles well in a variety of sea conditions.

Customization: Being a custom build, many boats have unique features tailored to their owner's preferences.

Cons

Age-Related Maintenance: As a vessel from 1977, it may require ongoing upkeep, including potential updates to rigging, electronics, and mechanical systems.

Outdated Technology: Original equipment may be outdated compared to modern yachts, necessitating upgrades for navigation and comfort.

Weight: Heavier construction can affect speed and maneuverability compared to newer, lighter designs.

Limited Availability of Parts: Some original components may be hard to find, leading to longer repair times.

Potential for Higher Operating Costs: Due to its size and age, fuel consumption and maintenance expenses might be higher than more contemporary models.

Made For

The 1977 Custom International Offshore 65 is designed for serious offshore racing enthusiasts and experienced sailors seeking a high-performance, custom-built yacht. Its robust construction and advanced design make it ideal for those who value speed, durability, and competitive edge in challenging ocean conditions. Whether for professional racing circuits or ambitious offshore adventures, this vessel caters to sailors who demand top-tier craftsmanship and exceptional sailing capabilities.

Finance your dream boat!

Use our boat payment calculator to estimate monthly payments for 1977 Custom International Offshore 65. 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 Motor Yacht cost in today's market, or how much does a Custom 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
$2,526.62/mo
$
$
%
Principal Loan Amount$ 339,150
Total Payment$606,387.60

Finance your dream boat!

Use our boat payment calculator to estimate monthly payments for 1977 Custom International Offshore 65. 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 Motor Yacht cost in today's market, or how much does a Custom 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
$2,526.62/mo
$
$
%
Principal Loan Amount$ 339,150
Total Payment$606,387.60

Contact BananaBelt Boats & Yachts

2919 V Avenue, Anacortes, WA, 98221

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2919 V Avenue
Anacortes, WA 98221

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