Ocean Alexander 100 Skylounge
The Ocean Alexander 100 Skylounge is among the most engineered semi-displacement motor yachts ever produced in the 100-foot class, and the used market for this platform reflects that. This page covers what a used Ocean Alexander 100 Skylounge actually costs in today’s market, what the sold data shows and the specification differences that determine where any individual boat falls within the current price spread. If you are evaluating a sale or a purchase, start here.
Two Generations, One Model Name
The first thing a buyer or seller needs to understand is that the label “Ocean Alexander 100” spans two meaningfully different generations of yacht, and the current inventory includes both. Treating them as equivalent is the most common mistake made by buyers who have not spent time with this specific platform.
The 2008 generation was designed by Ed Monk and carries a 22-foot beam, twin MTU 10V 2000 engines producing 1,502 horsepower each and an interior architecture that reflects the design sensibility of that era. Robin’s Nest, the current 2008 example in the market, is listed at $2,999,000 in Fort Lauderdale with approximately 2,735 hours on each engine and a 2024 refit completed. It is a capable, fully capable ocean yacht. It is not the same product as a 2016 or later build.
Beginning with the 2016 model year, Ocean Alexander introduced a redesigned platform with the Evan K. Marshall interior, a widened 23-foot beam, twin MTU 12V 2000 engines producing 1,920 horsepower each, the Sylomer floating floor system, marine-grade aluminum beam construction and significantly expanded window spans. These are structural and mechanical changes, not a cosmetic refresh. The aluminum beam engineering is the reason the 100 Skylounge can carry window spans that would not be possible in conventional fiberglass construction at this length. The Sylomer floor system, which Ocean Alexander notes is typically found on vessels 130 feet and larger, contributes to a noise and vibration signature that experienced owners comment on consistently.
The $2,999,000 to $5,490,000 spread between the 2008 Robin’s Nest and the 2016 Sea N Sea reflects those differences accurately. It is not depreciation. It is a different product. The sold data and market analysis on this page focus on the 2016-and-later generation. Robin’s Nest is noted in the inventory table for completeness.
What the Sold Data Shows
Two transactions from this model are available in the current data set, and only one is reliable enough to use for market analysis.
Lanikai, a 2019 Ocean Alexander 100 Skylounge with 450 hours on twin MTU 12V 2000 engines at time of listing, was offered in March 2024 at $8,295,000. She sold in January 2025 at $8,060,000 after 310 days on the market. That represents a 2.8 percent discount from the original ask. The extended time on market at a relatively modest discount is consistent with a yacht correctly priced for a genuinely narrow buyer pool. At $8,000,000, there are not many qualified buyers in any given quarter, and 310 days is not evidence of a problem with the boat.
A second 2019 transaction, a Flybridge variant named Paladin, recorded at exactly the listing price of $7,900,000 after 87 days. Any transaction recording at full ask in a market where negotiation is standard warrants scrutiny. That data point is excluded from this analysis. A separate article on this site explains in detail how sold prices in yacht brokerage can be adjusted before they are recorded as closed, and why sellers should ask their broker to show them only verified, reliable transaction data when establishing a list price.
Based on available reliable data, the current realistic sold range for a 2019-vintage Ocean Alexander 100 in above-average condition is $7,800,000 to $8,100,000. Engine hours, warranty status, zero-speed stabilizer configuration and major option packages move where within that range a specific boat lands.
For 2016 and 2017 models, no clean sold comparables are available in the current data set. The active listing spread of $5,490,000 to $5,950,000 provides a working reference, but until a verified transaction closes on a 2016 or 2017 example, those figures represent the market’s current ask rather than confirmed value.
A Note on Engine Configuration
Every current 100-series listing from 2017 forward carries twin MTU 12V 2000 engines. The 2016 Sea N Sea is the exception. That boat carries Caterpillar C32 ACERT engines producing approximately 1,925 horsepower each. Both are capable, well-supported diesel plants with established dealer networks. The practical difference for a buyer is resale perception and dealer preference within the ownership community. A portion of qualified buyers at this price level have a stated MTU preference and will factor that into an offer. A seller positioning a CAT-powered 100 should understand that preference exists and price the boat in a way that does not require the objection to surface at survey.
Active Inventory: April 2026
Five Ocean Alexander 100-series yachts are currently offered for sale. One represents the 2008 generation. Four represent the 2016-and-later platform. Engine hours are as reported in current listing data.
Robin’s Nest (2008 / Ed Monk generation) is listed at $2,999,000 in Fort Lauderdale. Twin MTU 10V 2000 engines at approximately 2,735 hours each. 2024 refit completed. This is the older generation platform and is priced to reflect that. Tax not paid.
Sea N Sea (2016 Skylounge) is listed at $5,490,000 in Miami. Caterpillar C32 ACERT engines at 1,680 hours each. Mechanicals current on all services, 1,000-hour service completed on mains and generators. Tax paid. Four staterooms rather than the five-stateroom layout found on later builds.
Chindon (2017 Skylounge) is listed at $5,950,000 in North Palm Beach. Twin MTU 12V 2000 engines at 1,712 and 1,719 hours respectively. Extended MTU engine propulsion coverage warranty runs through March 2027. Comprehensive refit work completed in 2022 and again in 2025 including new propellers, shaft seals, batteries, generator turbos, watermaker membranes and updated electronics. Four staterooms.
Iridescence (2020 Flybridge) is listed at $7,795,000 in Fort Lauderdale. Twin MTU 12V 2000 M96L engines at 1,508 hours each with MTU extended warranty valid through September 2028. Flybridge Jacuzzi. Five staterooms with on-deck primary suite. US duty paid. Maintained by the original crew.
Bella Lisa (2020 Skylounge) is listed at $8,500,000 in Lighthouse Point. Twin MTU 12V 2000 M96L engines at 1,169 and 1,327 hours respectively, the starboard engine replaced under warranty. Five staterooms with on-deck master. Zebra wood and walnut Evan K. Marshall interior. Bella Lisa is hull number 18, the final Ocean Alexander 100 produced. For a buyer who understands what a final-hull position means in a completed production run, that distinction is not a selling point invented by a broker. It is a fact about the asset.
What Moves the Value on a Used Ocean Alexander 100
Hours alone do not determine value on a 100-foot motor yacht at this price level. The factors that consistently move the number in this market are the presence and condition of zero-speed stabilizers, whether an MTU extended warranty remains active and transferable, the specific layout (five staterooms versus four), interior finish package, fly configuration and whether the yacht has been maintained by a dedicated professional crew or managed as a seasonal-use boat without continuous oversight.
The 90-day threshold documented across the Ocean Alexander market insights on this site applies here as well. A 100-series yacht that crosses 90 days without an accepted offer begins to accumulate buyer skepticism regardless of condition. Lanikai’s 310 days at a 2.8 percent discount is instructive. The buyer pool for an $8,000,000 motor yacht is genuinely narrow and time on market at this level does not automatically signal a problem. But a seller needs real data to maintain pricing discipline when the inquiries slow in month four. Generic market reports do not provide that. Verified transaction data does.
For owners considering the full Ocean Alexander model range in context, the 100 Skylounge occupies the price tier directly above the Ocean Alexander 90R and shares the Evan Marshall design DNA with the larger Revolution and Legend series builds.
Ocean Alexander’s current production and full specification documentation for all series are available directly from the builder at oceanalexander.com.
Confirmed Specifications
2016 to 2020 Generation
| LOA | 100 ft 8 in (30.71 m) |
| Beam | 23 ft (7.01 m) |
| Min Draft | 5 ft 6 in (1.68 m) |
| Max Draft | 6 ft 5 in (1.96 m) |
| Displacement | 220,264 lbs |
| Fuel Capacity | 4,000 gallons |
| Fresh Water | 650 gallons |
| Main Engines | Twin MTU 12V 2000, 1,920 HP each |
| Generators | Twin Kohler 55 kW |
| Cruising Speed | 18 to 19 knots |
| Max Speed | 22 to 24 knots |
| Staterooms | 4 or 5 (on-deck master on 5-stateroom layout) |
| Crew Cabins | 3 |
| Gross Tonnage | 200 to 208 GT |
| Hull Construction | Vinylester resin with high-density structural foam |
| Designer | Ed Monk (2008) / Evan K. Marshall interior (2016 onward) |
Ocean Alexander 100 Skylounge FAQ's
What is a realistic price for a used Ocean Alexander 100 Skylounge?
Pricing spans a wide range depending on model year and generation. The 2008 generation with Ed Monk design and MTU 10V engines currently lists at approximately $2,999,000. The 2016 and 2017 Evan Marshall generation lists between $5,490,000 and $5,950,000. The 2019 and 2020 builds with MTU 12V 2000 engines and current warranty coverage list between $7,795,000 and $8,500,000. The only verified sold transaction available is a 2019 example that closed at $8,060,000 after 310 days on the market, representing a 2.8 percent discount from the original ask of $8,295,000.
What is the difference between the Ocean Alexander 100 Skylounge and the 100 Flybridge?
The primary difference is the upper deck configuration. The Skylounge version features an enclosed second salon above the main deck with panoramic windows on all four sides, a wet bar, helm station and aft deck access. The Flybridge version positions the upper helm and entertainment area in an open or partially open format with a more traditional flybridge layout. Both share the same hull, engines, beam and lower deck accommodation plan. The Skylounge configuration is generally preferred by owners who cruise in variable weather or use the yacht for extended passages.
How many engine hours is too many on a used Ocean Alexander 100?
The MTU 12V 2000 engines in the 2016-and-later 100 series are rated for well beyond 5,000 hours with proper maintenance. Current listings range from 1,169 to 1,719 hours, which represents light to moderate use for a boat of this size and age. The more important question is not the hours but the service history, whether an MTU extended warranty remains active and whether the engines have been maintained by a certified MTU service center. A boat with 2,500 hours and a complete service record is a better purchase than a boat with 800 hours and a maintenance history no one can document.
Is the 2008 Ocean Alexander 100 the same boat as the 2016 model?
No. The 2008 model is a meaningfully different platform. The 2008 carries a 22-foot beam versus 23 feet on the 2016 and later builds. The engines are MTU 10V 2000 units producing 1,502 horsepower each versus the 1,920-horsepower MTU 12V 2000 in the later generation. The 2008 interior follows an Ed Monk design rather than the Evan K. Marshall interior that defines the 2016 platform. The Sylomer floating floor system, marine-grade aluminum beam construction and expanded window engineering introduced in 2016 are not present in the 2008 build. The $2,999,000 to $5,490,000 price gap between the two generations reflects those differences accurately.
Why does the Ocean Alexander 100 hold its value compared to other 100-foot motor yachts?
Several structural factors contribute. The aluminum beam construction, Sylomer floating floor system and vinylester resin hull are typically found on larger and more expensive vessels. The MTU 12V 2000 engine package has a strong service network and well-documented longevity. The Evan K. Marshall interior carries a design reputation that resonates with experienced buyers. Production volume was also limited. Bella Lisa, the final 100-foot Ocean Alexander built, is hull number 18. A platform with 18 hulls total does not suffer from oversupply. When qualified buyers are considering this market, they are working through a short list of known examples rather than sorting through hundreds of comparable builds.
The Ocean Alexander 100 Skylounge market is narrow. There are five boats for sale, one verified sold transaction in the current data set and a price spread that requires someone who has tracked every example to navigate with confidence. If you own one of these yachts and are thinking about what it is worth in this market, or if you are a buyer trying to evaluate which of the current listings represents the right asset at the right number, that conversation is worth having before you make a move.
Owners of Ocean Alexander yachts in Southeast Florida can also request a private valuation to understand where their specific boat sits in the current market before committing to a list price.
Ocean Alexander Specialist
Southeast Florida
561-460-6956