Invictus ST550 Invictus ST550
Sunreef Ultima 55Sunreef Ultima 55
VS

Invictus ST550
vs.
Sunreef Ultima 55

By YachtBuyer
YachtBuyer is the only place where you can directly compare competing yacht models, with full breakdowns on technical specifications and onboard features.

So with YachtBuyer you can not only enjoy the best data and market activity on your chosen yachts but also how they compare to their closest rivals.

Below, we delve into a detailed comparison of the Invictus ST550 and the Sunreef Ultima 55. The Invictus ST550 features a fibreglass planing hull, ensuring durability and a lighter weight. The yacht's length of 16.87m/55'4" and beam of 5.04m/16'6" provide a stable and spacious platform for both at-sea and anchored conditions. The Sunreef Yachts Ultima 55 offers a very similar length of 16.6m/54'6", with a marginally narrower beam of 5.6m/18'4",

Interested in owning a Invictus ST550 or Sunreef Yachts Ultima 55? Explore all globally available Invictus ST550 for sale and Sunreef Yachts Ultima 55 for sale verified through YachtBuyer MarketWatch, free of fake listings, or check out all similar models from Invictus for sale or Sunreef Yachts for sale.

At a Glance

Invictus ST550

Status
In Production
2025 - Present

Sunreef Ultima 55

Status
In Production
2025 - Present
Invictus ST550 illustration
16.87m  

Beam 5.04m

Draft -

LENGTH : BEAM Ratio

0.00
:
1

6 Guests

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6

4 Guests or 6 is Optional  

2 Cabins Optional 3 Cabin Layout

1 Crew

Sunreef Ultima 55 illustration
16.6m  

Beam 5.6m

Draft 0.9m

LENGTH : BEAM Ratio

0.00
:
1

8 Guests

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8

6 Guests or 8 is Optional  

3 Cabins Optional 4 Cabin Layout  

2 Crew

Performance

  • Cruising Speed

  • Invictus ST550
    No Data
  • Sunreef Ultima 55
    0
    knots

  • Top Speed

  • Invictus ST550
    0
    knots
  • Sunreef Ultima 55
    0
    knots

Range

Fuel Capacity

  • Invictus ST550

    -

  • Sunreef Ultima 55

    -

Interior

For most buyers, interior layout, finish and especially space will rank as some of the most important factors when choosing a yacht, here you can see how your chosen yachts directly compare.

Invictus ST550 , Interior Invictus ST550 , Interior
Awaiting Supply
Sunreef Ultima 55, Interior Sunreef Ultima 55, Interior
Sunreef Ultima 55

Accommodation

Cabin design and luxury should deliver a place of real sanctuary for the Owner or guests, with finish, space and light all key.

Invictus ST550 , Accommodation Invictus ST550 , Accommodation
Invictus ST550
Sunreef Ultima 55, Accommodation Sunreef Ultima 55, Accommodation
Sunreef Ultima 55

Helm Station

Whether it will be the Owner or skipper taking control, helm positions should ensure excellent visibility, supportive seating and a design that delivers clear instrumentation.

Invictus ST550 , Helm Station Invictus ST550 , Helm Station
Invictus ST550
Sunreef Ultima 55, Helm Station Sunreef Ultima 55, Helm Station
Sunreef Ultima 55

Deck Areas

As well as being a place to enjoy the real essence of yachting lifestyle, decks are also a serious work area and each area must be safe, practical and so fun to use.

Invictus ST550 , Deck Area Invictus ST550 , Deck Area
Invictus ST550
Sunreef Ultima 55, Deck Area Sunreef Ultima 55, Deck Area
Sunreef Ultima 55

Compare Layouts

Main Deck

Invictus ST550

Main Deck

Standard

Main Deck

Optional galley down Option

Sunreef Ultima 55

Main Deck

 

Lower Deck

Invictus ST550

Lower Deck

Standard

Lower Deck

Optional galley down Option  A

Lower Deck

Optional 3 cabin layout Option  B

Sunreef Ultima 55

Lower Deck

Standard

Lower Deck

Optional 4 cabin layout Option

LIVE: Used Price Guides

Find out how much a pre-owned version of these models may cost based upon the asking prices of all yachts listed for sale globally in the last 3 years according to YachtBuyer Market Watch & our current sales listings.

Invictus ST550 Used Prices

In Production Since: 2025

  • Average Price* -
  • Price Range † -
  • Average Age -
 
 
 
No Yachts For Sale
ST550 For Sale

or Build Your Own

 
 

Sunreef Ultima 55 Used Prices

In Production Since: 2025

  • Average Price* -
  • Price Range † -
  • Average Age -
 
 
 
No Yachts For Sale
Ultima 55 For Sale

or Build Your Own

 
 


Rivals to Sunreef Ultima 55

Specification Data

Model Name:ST550Ultima 55
Builder:InvictusSunreef Yachts
Range:Invictus ST SeriesSunreef Ultima Range
Principal Characteristics
Body Type: Classic Style, Cruiser Multihull, Catamaran
Use Types: Weekending, Cruising, Dayboating Cruising, Weekending
LOA: 16.87m 16.6m
Max Beam: 5.04m 5.6m
Draft: - 0.9m
Gross Tonnage: - -
Displacement: 25,000 Kg  
(Approx)		 -
Hull Material: GRP / Fibreglass  (Fibreglass) Composite
Superstructure: Fibreglass Composite
Fuel Capacity: 2,200 Litres 1,500 Litres
Fresh Water Capacity: 500 Litres 300 Litres
Black Water capacity: 330 Litres -
Yacht Designers
Exterior Designer: Christian Grande Sunreef Yachts
Interior Designer: Christian Grande Sunreef Yachts
Accommodation
Guests: 4 (Optional 6) 6 (Optional 8)
Cabins: 2 - 3 3 - 4
Berths:1x Double1x Convertable2x Double1x Bunk Bed
Guests Heads: 2 3
Shared Day Heads: - 0
Crew
Crew:1 to 1 2
Crew Cabins: 1 1
Crew Heads: 1 1
Engines & Performance
Max Speed:35 knots36 knots
Max Range: - 240 NM @ 20 knots
Engine Options:

Compare Engine Options

Compare Engine Options

Brand: Volvo Penta Volvo Penta Volvo Penta Volvo Penta
Model:D11-IPS800D11-IPS950D8-IPS800D6-IPS650
Qty: x2 x2 x2 x2
Power: 625 bhp (459 Kw) each
@ 2,400 rpm 725 bhp (533 Kw) each
@ 2,500 rpm		 600 bhp (441 Kw) each
@ 3,000 rpm 480 bhp (353 Kw) each
@ 3,700 rpm
Max Speed: - 35 knots 36 knots 35 knots
Cruising Speed: - - 20 knots   25 knots  
Economic Speed: - - - -
Cylinders: 6 Cylinder 6 Cylinder 6 Cylinder 6 Cylinder

Speeds/Ranges Are Approx. - Subject to Load, Sea Conditions & Variables.

Interested?

Find out more about the...

ST550 For Sale Ultima 55 For Sale

YachtBuyer logo

WRITTEN BY

Editorial Team

WRITTEN BY

Editorial Team

The editorial team at YachtBuyer consists of yacht specialists, seasoned professionals, renowned journalists, and individuals with a profound passion for the world of yachting.

'NOTE: The information contained in this website is for general information purposes only. The information is provided by YachtBuyer and while we endeavour to keep the information up to date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the website or the information, products, services, or related graphics contained on the website for any purpose. Any reliance you place on such information is therefore strictly at your own risk.'

Stay up to date with the latest Yachts & News

Join our newsletter

Sign in / Register

Current
Location