Sirena 42MSirena 42M
Custom Line 140Custom Line 140
VS

Sirena 42M
vs.
Custom Line 140

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 Sirena 42M and the Custom Line 140. The Sirena Yachts 42M features a steel fast displacement hull, ensuring durability and a lighter weight. The yacht's length of 42m/137'10" and beam of 8.8m/28'10" provide a stable and spacious platform for both at-sea and anchored conditions. The Custom Line 140 offers a very similar length of 42.15m/138'3", with a very similar beam of 8.57m/28'1",

Interested in owning a Sirena Yachts 42M or Custom Line 140? Explore all globally available Sirena Yachts 42M for sale and Custom Line 140 for sale verified through YachtBuyer MarketWatch, free of fake listings, or check out all similar models from Sirena Yachts for sale or Custom Line for sale.

At a Glance

Sirena 42M

Status
In Production
2026 - Present

Custom Line 140

Status
In Production
2022 - Present
Sirena 42M illustration
42m  

Beam 8.8m

Draft 2.5m

LENGTH : BEAM Ratio

0.00
:
1

10 Guests

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

 

5 Cabins

9 Crew

Custom Line 140 illustration
42.15m  

Beam 8.57m

Draft 2.31m

LENGTH : BEAM Ratio

0.00
:
1

10 Guests

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10

 

5 Cabins

7 Crew

Performance

  • Cruising Speed

  • Sirena 42M
    No Data
  • Custom Line 140
    0
    knots

  • Top Speed

  • Sirena 42M
    No Data
  • Custom Line 140
    0
    knots

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.

Sirena 42M, Interior Sirena 42M, Interior
Sirena 42M
Custom Line 140, Interior Custom Line 140, Interior
Custom Line 140

Accommodation

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

Sirena 42M, Accommodation Sirena 42M, Accommodation
Sirena 42M
Custom Line 140, Accommodation Custom Line 140, Accommodation
Custom Line 140

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.

Sirena 42M, Helm Station Sirena 42M, Helm Station
Awaiting Supply
Custom Line 140, Helm Station Custom Line 140, Helm Station
Custom Line 140

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.

Sirena 42M, Deck Area Sirena 42M, Deck Area
Sirena 42M
Custom Line 140, Deck Area Custom Line 140, Deck Area
Custom Line 140

Flybridge

A superb place to enjoy days or nights on the water, this raised deck and driving position adds another dimension to yacht ownership and the driving experience.

Sirena 42M, Fly Deck/Sportdeck Sirena 42M, Fly Deck/Sportdeck
Sirena 42M
Custom Line 140, Fly Deck/Sportdeck Custom Line 140, Fly Deck/Sportdeck
Custom Line 140

Beach Club

A true beach club should be a waterside lounge and terrace. Usually at the stern, a beach club might open on one, two or three sides of the yacht. It should be practical, able to withstand plenty of use, watersports and saltwater, but also luxurious, creating a spectacular retreat day or night.

Sirena 42M, Beach Club Sirena 42M, Beach Club
Sirena 42M
Custom Line 140, Beach Club Custom Line 140, Beach Club
No Beach Club

Compare Layouts

Sun Deck

Sirena 42M

Sun Deck

 

Custom Line 140

Sun Deck

 

Upper Deck

Sirena 42M

Upper Deck

 

Custom Line 140

Upper Deck

 

Main Deck

Sirena 42M

Main Deck

 

Custom Line 140

Main Deck

 

Lower Deck

Sirena 42M

Lower Deck

 

Custom Line 140

Lower Deck

 

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.

Sirena 42M Used Prices

In Production Since: 2026

  • Average Price* -
  • Price Range † -
  • Average Age -

Available to order

View Options & Specs
42M For Sale

or Build Your Own

 
 


Rivals to Sirena 42M

Custom Line 140 Used Prices

In Production Since: 2022

  • Average Price* -
  • Price Range † -
  • Average Age -
 
 
 
No Yachts For Sale
Custom Line 140 For Sale

or Build Your Own

 
 


Rivals to Custom Line 140

Specification Data

Model Name:42MCustom Line 140
Builder:Sirena YachtsCustom Line
Range:SuperyachtsCustom Line Planing
Principal Characteristics
Body Type: Superyacht Superyacht
Use Types: Cruising Cruising
LOA: 42m 42.15m
Max Beam: 8.8m 8.57m
Draft: 2.5m 2.31m
Gross Tonnage:434 GT398 GT
Displacement: 496 Tonnes  
(Approx)		 250 Tonnes  
(Full Load)
Hull Material: Steel Composite  (Composite/Carbon Fibre)
Superstructure: Aluminium Carbon Fibre
Fuel Capacity: 45,000 Litres 30,000 Litres
Fresh Water Capacity: 10,700 Litres 4,000 Litres
Black Water capacity: 8,500 Litres -
Yacht Designers
Exterior Designer: Luca Vallebona Francesco Paszkowski Design
Interior Designer: Hot Lab, Luca Vallebona Margherita Casprini
Accommodation
Guests: 10 10
Cabins: 5 5
Berths:1x King2x Double4x Single4x Double2x Single
Guests Heads: 7 8
Crew
Crew:9 7
Crew Cabins: 5 4
Crew Heads: 5 4
Engines & Performance
Max Speed: - 21.5 knots
Brand: MTU
Model:16V 2000 M96L
Qty: x2
Power: 2,600 bhp (1 Kw) each
@ 2,450 rpm
Max Speed: 21.5 knots
Cruising Speed: 18 knots  
Economic Speed: -
Cylinders: 16 Cylinder

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

Interested?

Find out more about the...

42M For Sale Custom Line 140 For Sale

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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.

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