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TENACITY

1986 Bertram 58 Flybridge Motor Yacht

Muskegon, Michigan · 1,698 engine hours · Updated Mar 24, 2026

$299,988

USD · OFFERS CONSIDERED

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58 ft
Length
17 ft
Beam
Motor Yachts
Class
Detroit Diesel 12V71TI
Engine
850 HP (1,700 total)
Power
1,698
Hours
—
Cabins
—
Heads

Overview

Wow is one word that describes the last of the great Bertram MY shes a 100% fresh water boat. We are proud to be offering Tenacity she's the last year Bertram built their 58 Motor Yacht in that Era. She was ordered new by a West Michigan man who had his great friend fly monthly to the factory to oversee the build with all the custom upgrades that the owner has ordered. The list of custom factory options are extensive. Just to name a few were hydraulic bow thruster and also a crash pump system with an emergency valve if you had a hull breach she would be able to be saved like no other vessel back then. She has been serviced and well cared for by all owners and has always been in heated storage. The hull sides shine like the day that she left the factory and her chrome and stainless shows as new as well. I could go on and on but you will have to see her for your self. Call today to step aboard this incredible Yacht.

Updates over the years 

Updates Winter 

Leather sectional 12k 2024/2025

New DR chairs 3k 2024/2025

Granite + tile 10k 2024/2025

Appliances 10k 2024/2025

Labor 15-20k 2024/2025

Washer Dryer Stacker 2024/2025

Also just had a complete detail buff and wax whole structure above and below rub rail. 8K 2025

Complete service spring 2023

5 Smart TVs all new 2023

LED lights thru out 2023

New memory foam mattress toppers on all beds 2023

Topside and transom buffed and waxed

June 2023

Fresh Oil samples 

Brand new bridge enclosure 2022

Complete service on mains and gen 2021/2022

Bottom paint 2021/2022

New stain proof Infiniti carpet on rear main deck and thru-out the boat 2022

Fusion Touch screen head unit in Cockpit

Fusion Touch Screen head unit on fly bridge

AC/Heat systems serviced on yearly basis

Freedom Lift

Captain and passenger helm chairs on bridge updated

Custom when built Krystal back lite Art piece in the Master.

Spare Props

Updated stainless appliances 

Updated wine and beverage chiller

Updated electronics 

New sofa in saloon

All soft goods and decorations are included in the sale

Cockpit Saloon area updated furniture as well

Liquor dispensary system








Specifications

Length Overall
58 ft
Beam
17 ft
Draft (max)
5 ft
Hull Material
Fiberglass
Fuel Type
Diesel
HIN
BERR0175A586
Condition
Used
Fuel Capacity
625 gal
Water Capacity
130 gal
Holding Tank
100 gal
Max Speed
22 kts
Cruise Speed
18 kts

Engines (twin)

Detroit Diesel 12V71TI (#1)

Year
1986
Power
850 HP
Hours
1,698
Fuel
Diesel
Drive
Inboard
Notes
Starboard

Detroit Diesel 12V71TI (#2)

Year
1986
Power
850 HP
Hours
1,701
Fuel
Diesel
Drive
Inboard
Notes
Port

Generators

Onan 30 K

Hours
1,550

Location

Location Muskegon, Michigan, United States
Flag / Registration N/A
Region Continental United States

Your Broker

Ward Yacht Sales

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Questions about 1986 Bertram 58 Flybridge Motor Yacht

What is the asking price for 1986 Bertram 58 Flybridge Motor Yacht?

1986 Bertram 58 Flybridge Motor Yacht is currently listed at $299,988. Final terms depend on survey, sea trial, and offer structure.

Where is 1986 Bertram 58 Flybridge Motor Yacht located and can I schedule a showing?

1986 Bertram 58 Flybridge Motor Yacht is located in Muskegon, Michigan and is marked Available. Showings and sea trials can be arranged for qualified buyers through our team.

What are the key specs for 1986 Bertram 58 Flybridge Motor Yacht?

1986 Bertram 58 Flybridge Motor Yacht is 58 ft overall and includes 58 ft · Motor Yachts · fiberglass.

Is financing available for 1986 Bertram 58 Flybridge Motor Yacht?

Yes. Marine financing is available for many vessels, with terms based on model year, buyer profile, and lender underwriting.

Can I get a survey and mechanical inspection before closing?

Yes. Buyers are encouraged to complete an independent marine survey and engine/mechanical inspections during due diligence before final acceptance.

Is this a co-brokerage listing with Jefferson Beach Yacht Sales?

Yes. This vessel is listed by Jefferson Beach Yacht Sales. Ward Yacht Sales can represent you as a buyer's broker and coordinate the process through closing.

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