1999 Neptunus 54 Express

ID# 3933191

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Yacht Overview

Make: Neptunus

Model: 54 Express

Year: 1999

Length: 54′

Located In: Wilmington, NC

Engine/Fuel Type: diesel

Hull Material: Fiberglass

YW#: 8240678


1999 Neptunus Yachts International 54 Express

Neptunus has been building high quality yachts for over 35 years. Over 175 stylish, sleek and racy looking craft have left their facility, to the delight of their new Owners. “MY DIAMOND” is a 1999 version of the popular Express model. She is in excellent condition with her luxurious high gloss cherry interior, and a brand new chiller system for cool air even in tropical climes. Mechanically, her engines have just received their 1,000 hour service by Gregory Poole in North Carolina. All new navigation electronics will guide you safely on your journeys. “MY DIAMOND” stands ready to accommodate or entertain on demand, your call…what are you waiting for ????

Full Specs

Boat Name



LOA: 54.5
Beam: 15.58 ft
Maximum Draft: 4.42 ft
Displacement: 41,900 lb


Engine Brand: Caterpillar
Engine Model: 3406E
Engine/Fuel Type: diesel
Engine Power: 800|horsepower
Engine Type: Inboard

Engine Brand: Caterpillar
Engine Model: 3406E
Engine/Fuel Type: diesel
Engine Power: 800|horsepower
Engine Type: Inboard


Fresh Water Tanks: 1 (120 Gallon)
Fuel Tanks: 1 (680 Gallon)
Holding Tanks: 1 (65 Gallon)


Number of cabins: 2
Number of heads: 2

Vessel Walkthrough

Boarding aft by the synthetic teak covered swim platform one goes up 3 steps to the aft cockpit area. Here we find a large C-Shaped sectional with corresponding folding table. Plenty of room for the whole crew to relax and imbibe, aided by the wet bar, sink and refrigerator. Now we continue forward thru glass doors to the command helm and bridge deck. Another L-Shaped settee to starboard and cabinets to port. Just forward of the settee is the helm, with a complete suite of new electronics (see electronics section). Overhead is the hardtop/arch with a panoramic sliding sunroof.

Port side of the helm, going forward down 5 steps to the salon/galley area. Cabinets and counters lead forward on port side with large C-Shaped dinette and table to starboard fore and aft sides of the dinette find doorways to the master and guest cabins.

Back on deck, ample walkways lead from cockpit to the fore deck where we find a good sized sunning pad and a bow platform with anchor and windlass, stainless steel cleats, pulpit and stanchions, as well as 3 round Bomar hatches.

Main Salon:

  • Large U-Shaped dinette with telescoping table
  • Four stainless port lights provide ambient lighting
  • Going forward to port is a day head shared with the guest stateroom
  • Overhead lighting is recessed LED throughout
  • Interior walls and bulkheads are high gloss cherry and fabric covered and the overhead is leatherette throughout


  • Corian single galley sink with extendable faucet
  • AEG four burner flat top electric stove
  • Sub-Zero 6-Cubic Foot Refrigerator, under counter mounted
  • 10-Cubic Foot Chest Refrigerator/Freezer in Lazzerette
  • Magic Chef Microwave Oven

Master Stateroom:

Center-line aft queen berth with double cedar lined hanging locker, storage cabinets port and starboard and en-suite head. Two stainless port lights on starboard side for ambient lighting. Cabin is high gloss cherry veneer.

Guest Stateroom:

Forward berth with Queen bed, countertops and storage lockers on either side of bed. Cedar lined hanging locker. Four stainless port lights for ambient lighting and a Bomar escape hatch. High gloss cherry bulkheads.


  • Bow platform with SS anchor chute
  • SS bow pulpit followed by SS railings extending to the cockpit
  • (4) SS cleats per side
  • Molded swim platform
  • Synthetic Teak in aft cockpit and swim platform
  • Assorted SS handrails where needed

Electronics and Helm:

New Equipment 2021:

  • Simrad NAC 3VRF Autopilot computer
  • Simrad AP 44 Auto Pilot controller
  • Simrad Pump 3, reversible hydraulic steering pump
  • Garmin 1242xsv Touchscreen GPS map, chart plotter
  • Garmin GTB 10 on deck hub
  • Icom IC-M424G VHF with hailer, GPS and Speco hailer horn
  • DTV-100 HD Marine TV antenna
  • Ritchie SS-2000 Compass
  • (3) Pairs of JL Audio 7.7” speakers
  • (3) Pairs of JL Audio 6.5 “ speakers

Prior to 2021:

  • Furuno 24 mile radar
  • Garmin 12” GPS display
  • Navigation and running lights


  • 12KW Northern Lights 240 volt, single phase generator with 1,010 hours
  • Custom 12 volt, 120 volt and 240 volt Breaker panels
  • 50Amp shore panel cable goes to 50amp breaker panel, then to a 15kva isolation transformer
  • 50Amp Shore power cord with Glendinning
  • 12Volt and 110 Volt lighting throughout
  • 110Volt lighting throughout
  • (4) HD deep cycle 160 amp hour Group 31 batteries for house loads and inverter
  • There are two 8D deep cycle 220 amp hour batteries wired in series for 24 volt engine starting circuit, windlass and thrusters and charged by a 30 amp 24 volt charger. House Batteries New 2022, Starting Batteries New Dec. 2021.
  • 25Amp AC inverter
  • 80Amp 12 volt charger
  • 30Amp 24 volt charger

Engine Controls and Helm:

  • Single helm station located on starboard side of the bridge deck
  • Wheel is 4.5 turns, stop to stop
  • Electronic MMS throttle and clutch levers
  • Dash includes:
  • Caterpillar Integrated Digital Engine and transmission monitors
  • Engine RPM gauge
  • Engine synchronizer
  • Oil pressure gauge
  • Voltmeter gauge
  • Coolant temp gauge
  • Fuel gauge
  • Trim tab controls
  • Blower control
  • Internal ships lighting
  • Spotlight control
  • Windlass control
  • Air Dual Horns
  • Engine stop switch
  • Engine room fire suppression activator switch
  • Wiper control
  • Sunroof controls
  • Bilge pump switches
  • Defog control
  • Windshield, center Vent control

Engine Details and Mechanical Equipment:

Port Main:

  • Caterpillar 3406E Turbo
  • 800 hp at 2300 rpm
  • Serial # 9WR00807
  • Hours: 1,002
  • Twin Disc V Drive
  • Model 5114 A

Starboard Main:

  • Caterpillar 3406E Turbo
  • 800 hp at 2300rpm
  • Serial # 9WR00806
  • Hours: 1,014
  • Twin disc Vee Drive
  • Model 5114A


  • Both are: MMC controlled with EMS display at the helm
  • Marine exhaust systems wet exhaust at stern
  • Raw water cooled thru a heat exchanger
  • 2.5” Monel/Ternet shaft
  • Bronze 5 blade Federal propellor, 24X28
  • Dripless shaft seals
  • Bronze seacocks
  • Vetus 160 KGF at 24 volts Bow thruster
  • Vetus 130 KGF at 24 volts, Stern thruster
  • Seastar model 2.4 1000psi Hydraulic steering system
  • Bennett trim tabs
  • Tankage: Fuel, 2-340 gal. aluminum tanks
  • Water, 1-120 gal. aluminum…20 gal. Rheem water heater
  • Holding, 1-65 gal. aluminum
  • Groco Senior 12 volt self priming pump for pressure water system
  • (2) Whale Gulper sump pumps in shower sumps
  • (2) Vacu flush electric toilets with fresh water flushing systems
  • Compressor condensate drains to shower sumps
  • 3-Rule 1500 gph automatic ( float switch ) and manual bilge pumps

NEW IN 2021: Air Conditioning:

  • Flagship 48,000 BTU Chiller unit with reverse cycle

Ground Tackle:

  • Simpson Lawrence 52 lb. galvanized plow anchor on the bow
  • 120’ X 3/8” Galvanized chain rode
  • Lewmar Concept II electric windlass with foot controls at bow and remote switches at helm


  • New 2021: Revere, 4 man Ocean Safety liferaft in a valise. Next inspection due 5-5-2024.
  • Globalfix V4 Cat 2 EPIRB and ResqLink PLB with rapid ditch Express bag
  • (Firefly PRO Waterbug, signal mirror, rescue whistle, Hemilight 3 Resqflare and distress flag and 12 drinking water pouches)
  • (3) 3 lb. Type ABC portable fire extinguishers
  • Firebuoy engine room fire suppression system
  • Smoke and carbon monoxide detectors in galley and staterooms
  • 20 USCG type II PFD’s
  • Air Dual Horns
  • Ships bell
  • Throwable life ring
  • Navigation lights

Broker's Comments

MY DIAMOND is an excellent example of a 1999 Neptunus 54 Express. She is ready to go wherever you want with her low hour, properly maintained, CAT 3406E engines.

Come see for yourself while she is still available.

Mechanical Disclaimer

Engine hours are as of the date of the original listing and are a representation of what the listing broker is told by the owner and/or actual reading of the engine hour meters. The broker cannot guarantee the true hours. It is the responsibility of the purchaser and/or his agent to verify engine hours, warranties implied or otherwise and major overhauls as well as all other representations noted on the listing brochure.


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.

This boat may not be listed by Massey Yacht Sales & Service and may be listed by another brokerage company. This listing is made available as a courtesy to those visiting our website.

The advertising broker is merely providing this information in an effort to represent you as a buyer in the purchase of this vessel.

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