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Cruising at Last 66' Pacemaker 66 Motor Yacht 1978

$ 179,000

This Vessel is no longer on the Market

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Own a Piece of History, Introducing the 1978 Pacemaker 66 Motor Yacht, formerly owned by the famous astronaut John Glenn, previously named Seniram 2 (Marines backward), is now available for discerning boaters seeking a classic vessel with a rich history. The Pacemaker 66 boasts a timeless design and has been well-maintained over the years, making her an ideal choice for those seeking a reliable and comfortable live aboard.

Featuring two large salons and four staterooms (1 owner suite / 2 guests / 1 crew) with 8 berths, this yacht has ample space for entertaining guests or accommodating a large family. The full-beam salon and walkaround side decks provide easy access to the outdoors and plenty of natural light, while the aft deck offers a perfect spot for al fresco dining or relaxation.

The interior of the yacht has been updated and tastefully decorated, with beautiful wood floors throughout. The full bar located behind the pilothouse bulkhead adds an extra touch of luxury and convenience to this already impressive vessel.

This Pacemaker 66 is a piece of maritime heritage that is sure to capture the attention of any boating enthusiast. Formerly owned by the legendary astronaut John Glenn for an impressive 22 years, this vessel holds a special place in the history of boating and space exploration.

As a rare and unique find in the boating world, this classic motor yacht offers an unparalleled combination of history, comfort, and style. Don't miss your chance to own a true gem of a vessel and experience the luxury and prestige that comes with owning a piece of John Glenn's legacy.



- Twin Detroit Diesel 475 Hp (7054 hrs)

- Four staterooms with three heads (One Cabin is forward for 2 Crew with a separate head)

- Woodwork throughout the vessel is in outstanding condition

- Updated Garmin and Raymarine electronics

- Bottom paint (2020)

- Props replaced (2020)

- All batteries replaced (2022)

- Portside AC water pump replaced

- New hot water heater (2022) 

- Generator 20kW with est. 2000 hours

- New roll-down privacy shades

- New frigidaire refrigerator

- AC fans replaced

- Teak refinished throughout Bow

- New flybridge bimini with Sunbrella fabric

- New flybridge exterior cushions and PVC foam backboards (Sunbrella sling fabric)

- Boston Whaler Tender Included / 25hp 4-stroke

- Sale includes all freestanding furniture

- Sale will include John Glenn Yacht Ownership Memorabilia

- Inquiry about marina lease assignment (Nov. 2023) at Twin Dolphin Marina, Bradenton, FL

United Yacht Sales is pleased to assist you in the purchase of this vessel. This boat is centrally listed by Denison Yachting. It is offered as a convenience by this broker/dealer to its clients and is not intended to convey direct representation of a particular vessel


  • Price USD:$ 179,000
  • Builder:


  • Model:

    66 Motor Yacht

  • Year:


  • Location:

    Ruskin, Florida, United States

  • Type:

    Power Yacht

  • LOA: 69 ft in
  • Display Length: 66 ft
  • Beam: 17' 5"
  • Yacht Category

    Motor Yachts

  • Water Capacity: 140 gals
  • Fuel Capacity: 1168 gals
  • Engine Details: General Motors / Detroit 12V 71 N
  • Engine 1: 7054.00 HRS 475.00 HP
  • Engine 2: 7054.00 HRS 475.00 HP
  • Engine Fuel: Diesel
  • Days on Market:

The 1978 Pacemaker 66 motor yacht is a classic vessel that has stood the test of time. Built with a timeless design that was ahead of its time, this yacht boasts a spacious and comfortable layout with two large salons and four staterooms.

The full-beam salon is perfect for entertaining guests or relaxing with family, while the walkaround side decks and aft deck provide easy access to the outdoors and plenty of natural light. The yacht's tasteful interior decor features beautiful wood floors throughout and a full bar located behind the pilothouse bulkhead.

This motor yacht is not only an impressive sight on the water, but also a piece of history, having been custom-built for the famous astronaut John Glenn and owned by him for 22 years. Whether you're looking for a stylish and reliable live aboard or a unique vessel to add to your collection, the 1978 Pacemaker 66 motor yacht is sure to impress.


- Bottom Paint (2020)

- New Props (2020)

Engine Room:

- Oil & Filters Changed (2023)

- All Six (6) Batteries Replaced (2022)

- Portside AC Water Pump Replaced (2022)

- Hot Water Heater Replaced (2021)


- Windshield Blinds Replaced (2023)

Main Salon:

- New Leather Couch & Loverseat. New side Chairs (2020)

- AC Replaced (2021)

- Aft door and window blinds replaced (2023)

Aft Deck:

- Full Surround Sunbrella Isinglass Relaced (2019)

- Roll Down Privacy Window Shade Installed (2020)

Lower Salon:

- New Insignia Bluetooth Capable Stereo Receiver (2019)


- New Frigidaire Refridgerator (2021)

- Fans Replaced on A/C (2022)

- Note: Stovetop Works / Oven Does Not

Guest Stateroom #1:

- 26" Insignia Roku Flatscreen TV

Guest Head:

- Upgraded Faucet

- Upgraded Larger Toilet

Master Stateroom:

- AC Replaced (2022)

- New 26" VISIO Flatscreen TV (2022)

- Port & Starboard Blinds Replaced (2023)

Master Head:

- Faucets Upgraded

- Upgraded Larger Toilet


- Bench Seat Cover Replaced (2019)

- New 3/4" Lines and 4 Fenders (2022)

- Teak Refinished Throughout (2023)


- Bimini Replaced with Sunbrella Fabric in Marine Blue (2019)

- Custom Cushions & Covers with PVC Foam Backboards (2022)

1984 Boston Whaler:

- New Cover in Sunbrella Fabric Marine Blue (2019)

- Bimini Added with Sunbrella Fabric in Marine Blue (2021)

- Cushions Added (2021)

- Updated Raymarine E120 chart plotter with color radar

- Open array radar

- Garmin GHP 20 Autopilot

- Garmin GHC 10 Autopilot controller with remote

- Raytheon R41X raster scan radar

- Datamarine international offshore depth finder

- Three VHF radios

Spacious galley area that includes all appliances, including washer/dryer and navigation desk area. 


- New Frigidaire Refridgerator (2021)

- Maytag Dishwasher

- Stovetop (Oven does not work)

- Kenmore Trash Compactor

- New AC Fans Replaced

- Splendide 7100XC washer/dryer combo



- Kenmore Bar Fridge

- Max Ice MiM50 icemaker at the bar

- Instant Hot Water

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.