Review of Mamba 33

Basic specs..

Both the hull and the deck is made of fibreglass. Generally, a hull made of fibreglass requires only a minimum of maintenance during the sailing season. And outside the sailing season, just bottom cleaning and perhaps anti-fouling painting once a year - a few hours of work, that's all. The deck is a double deck which improves the indoor climate.

The interior is like most other boats made of teak. Teak has the advantage of being naturally very oily and therefore water-repellent, which is suitable on boats. The boat is equipped with 4 cabins, 8 berths, a galley, 100.0 liter fresh water capacity and toilet facility.

The boat equipped with a fractional rig. A fractional rig has smaller headsails which make tacking easier, which is an advantage for cruisers and racers, of course. The downside is that having the wind from behind often requires a genaker or a spinnaker for optimal speed.

The Mamba 33 is equipped with a fin keel. A boat with a fin keel is more manoeuvrable but has less directional stability than a similar boat with a full keel.

The keel is made of lead. Compared with iron, lead has the advantage of being 44% heavier, which allows a smaller keel and hence less water resistance and higher speed.

The boat can enter most marinas as the draft is just about 1.70 - 1.80 meter (5.58 - 5.88 ft) dependent on the load. See immersion rate below.

Mamba 33 is typically equipped with an inboard Yanmar diesel engine at 18 hp (13 kW). The speed is 7.0 knots.

The transmission is a shaft drive. A shaft drive will in the long run require less maintenance than other types of drive e.g. a sail drive.

The fuel tank, which is made of stainless steel, has a capacity of 40.0 liters (10 US gallons, 8 imperial gallons).

Sailing characteristics

This section covers widely used rules of thumb to describe the sailing characteristics. Please note that even though the calculations are correct, the interpretation of the results might not be valid for extreme boats.

What is Capsize Screening Formula (CSF)?

The capsize screening value for Mamba 33 is 2.01, indicating that this boat would not be accepted to participate in ocean races.

What is Theoretical Maximum Hull Speed?

The theoretical maximal speed of a displacement boat of this length is 7.0 knots. The term "Theoretical Maximum Hull Speed" is widely used even though a boat can sail faster. The term shall be interpreted as above the theoretical speed a great additional power is necessary for a small gain in speed.

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Mamba 33 is about 181 kg/cm, alternatively 1018 lbs/inch. Meaning: if you load 181 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1018 lbs cargo on the boat it will sink 1 inch.

Sailing statistics

This section is statistical comparison with similar boats of the same category. The basis of the following statistical computations is our unique database with more than 26,000 different boat types and 350,000 data points.

What is Motion Comfort Ratio (MCR)?

What is L/B (Length Beam Ratio)?

What is a Ballast Ratio?

What is Displacement Length Ratio?

What is SA/D (Sail Area Displacement ratio)?

What is Relative Speed Performance?

Maintenance

When buying anti-fouling bottom paint, it's nice to know how much to buy. The surface of the wet bottom is about 31m 2 (333 ft 2 ). Based on this, your favourite maritime shop can tell you the quantity you need.

Are your sails worn out? You might find your next sail here: Sails for Sale

If you need to renew parts of your running rig and is not quite sure of the dimensions, you may find the estimates computed below useful.

UsageLengthDiameter
Mainsail halyard 31.9 m(104.7 feet)10 mm(3/8 inch)
Jib/genoa halyard31.9 m(104.7 feet)10 mm(3/8 inch)
Spinnaker halyard31.9 m(104.7 feet)10 mm(3/8 inch)
Jib sheet 9.8 m(32.3 feet)12 mm(1/2 inch)
Genoa sheet9.8 m(32.3 feet)12 mm(1/2 inch)
Mainsheet 24.6 m(80.8 feet)12 mm(1/2 inch)
Spinnaker sheet21.7 m(71.1 feet)12 mm(1/2 inch)
Cunningham4.0 m(13.0 feet)10 mm(3/8 inch)
Kickingstrap7.9 m(25.9 feet)10 mm(3/8 inch)
Clew-outhaul7.9 m(25.9 feet)10 mm(3/8 inch)

This section is reserved boat owner's modifications, improvements, etc. Here you might find (or contribute with) inspiration for your boat.

Do you have changes/improvements you would like to share? Upload a photo and describe what you have done.

We are always looking for new photos. If you can contribute with photos for Mamba 33 it would be a great help.

If you have any comments to the review, improvement suggestions, or the like, feel free to contact us . Criticism helps us to improve.

The Mamba 33 is a 32.32ft fractional sloop designed by Bengt Karlsson and built in fiberglass by Mamba Boats (SWE) between 1985 and 1991.

The Mamba 33 is a moderate weight sailboat which is a good performer. It is very stable / stiff and has a low righting capability if capsized. It is best suited as a coastal cruiser. The fuel capacity is originally very small. There is a very short water supply range.

Mamba 33 sailboat under sail

Mamba 33 for sale elsewhere on the web:

mamba 33 sailboat

Main features

Model Mamba 33
Length 32.32 ft
Beam 10.73 ft
Draft 5.58 ft
Country Sweden (Europe)
Estimated price $ 0 ??

Login or register to personnalize this screen.

You will be able to pin external links of your choice.

mamba 33 sailboat

See how Sailboatlab works in video

Sail area / displ. 18.25
Ballast / displ. 42.04 %
Displ. / length 214.48
Comfort ratio 22.10
Capsize 2.02
Hull type Monohull fin keel with spade rudder
Construction Fiberglass
Waterline length 27.23 ft
Maximum draft 5.58 ft
Displacement 9700 lbs
Ballast 4078 lbs
Hull speed 6.99 knots

mamba 33 sailboat

We help you build your own hydraulic steering system - Lecomble & Schmitt

Rigging Fractional Sloop
Sail area (100%) 517 sq.ft
Air draft 0 ft ??
Sail area fore 231.66 sq.ft
Sail area main 260.43 sq.ft
I 39 ft
J 11.88 ft
P 40.19 ft
E 12.96 ft
Nb engines 1
Total power 18 HP
Fuel capacity 10 gals

Accommodations

Water capacity 26 gals
Headroom 0 ft
Nb of cabins 0
Nb of berths 0
Nb heads 0

Builder data

Builder Mamba Boats (SWE)
Designer Bengt Karlsson
First built 1985
Last built 1991
Number built 0 ??

Other photos

mamba 33 sailboat

Modal Title

The content of your modal.

Personalize your sailboat data sheet

Paste a link here:

Give it a title:

And eventually a link to an image for the thumbnail:

Builder(s):

Hull Length:

32.32 feet ( 9.9 meters )

Waterline Length:

27.23 feet ( 8.3 meters )

Beam:

10.73 feet ( 3.3 meters )

Displacement:

9700 lbs ( 4399.8 kg )

Balast:

4078 lbs ( 1849.7 kg )

Sail Area:

517 ft ( 48 m )

Hull Type:

Fin Keel

Construct Material:

Fiberglass

Balast Type:

Lead

Rig Type:

Fractional Sloop

Sail Area:

517 ft ( 48 m )

Displacement To LWL:

214

Hull Speed:

7 Knots ( 8.1 miles/hour, 13 km/hour )

LWL To Beam:

2.5

Motion Comfort:

21.9

Capsize Ratio:

2

Pounds per Inch Immersion:

1044

Yachting Journal

Mamba 33 image

Boat Information

Length: 9.85 m

Width: 3.27 m

Depth: 1.75 m

Weight: 4000 kg

Engine: Yanmar 2GM20 -1987 with straight shaft

Main sail: 2021

Roller genoa: 2021

Starting battery 60 Ah: 2023

Consumption 3x75 Ah: unknown age

Raymarine A65 plotter

Toilet with 60 liter septic tank and deck discharge

Freshwater: 100 liters

Fuel tank: approximately 40 liters

Spacious sailboat for the family with four full-length berths and one berth at 1.65. Some details on the boat have been neglected and need some love. Canopy of unknown age and slightly worn, could use some impregnation. Main sail and roller genoa canopy in good condition but may need some repairs. Sold ready to sail with fenders, anchor, mooring lines, tableware, etc.

Improvements made during the year we have had the boat:

  • Installed solar charge controller and mobile solar panel
  • Replaced stainless steel shrouds
  • Replaced shroud wire
  • Renovated genoa traveler
  • Refreshed parts of the electrical installation
  • Purchased but not installed fuel tank gauge

The boat is located in Björlanda Kile

Great choice! Your favorites are temporarily saved for this session. Sign in to save them permanently, access them on any device, and receive relevant alerts.

  • Sailboat Guide

Mamba 34 is a 33 ′ 4 ″ / 10.2 m monohull sailboat designed by Rolf Magnusson and built by Mamba Boats and BK Marin AB between 1978 and 1986.

Rig and Sails

Auxilary power, accomodations, calculations.

The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL

Sail Area / Displacement Ratio

A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.

SA/D = SA ÷ (D ÷ 64) 2/3

  • SA : Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
  • D : Displacement in pounds.

Ballast / Displacement Ratio

A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.

Ballast / Displacement * 100

Displacement / Length Ratio

A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

  • D: Displacement of the boat in pounds.
  • LWL: Waterline length in feet

Comfort Ratio

This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )

  • D: Displacement of the boat in pounds
  • LOA: Length overall in feet
  • Beam: Width of boat at the widest point in feet

Capsize Screening Formula

This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.

CSV = Beam ÷ ³√(D / 64)

Designed as an IOR 3/4 ton. Also available with a frac. sloop rig. An updated, more cruising oriented version called the MAMBA 341 was introduced in 1981.

Embed this page on your own website by copying and pasting this code.

  • About Sailboat Guide

©2024 Sea Time Tech, LLC

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Review of Mamba 33

Basic specs..

The Mamba 33 is equipped with a fin keel. The fin keel is the most common keel and provides splendid manoeuvrability. The downside is that it has less directional stability than a long keel.

The keel is made of lead. Compared with iron, lead has the advantage of being 44% heavier, which allows a smaller keel and hence less water resistance and higher speed.

The boat can enter most marinas as the draft is just about 1.70 - 1.80 meter (5.58 - 5.88 ft) dependent on the load. See immersion rate below.

Mamba 33 is typically equipped with an inboard Yanmar diesel engine at 18.0 hp (13 kW), which gives a max speed about 5.3 knots.

The transmission is a shaft drive. A shaft drive will in the long run require less maintenence than other types of drive e.g. a sail drive.

The fuel tank which is made of stainless steel has a capacity of 40.0 liters (10 US gallons, 8 imperial gallons).

Sailing characteristics

This section covers widely used rules of thumb to describe the sailing characteristics. Please note that even though the calculations are correct, the interpretation of the results might not be valid for extreme boats.

What is Capsize Screening Formula (CSF)?

The capsize screening value for Mamba 33 is 2.01, indicating that this boat would not be accepted to participate in ocean races.

What is Theoretical Maximum Hull Speed?

The theoretical maximal speed of a displacement boat of this length is 7.0 knots. The term "Theoretical Maximum Hull Speed" is widely used even though a boat can sail faster. The term shall be interpreted as above the theoretical speed a great additional power is necessary for a small gain in speed.

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Mamba 33 is about 181 kg/cm, alternatively 1018 lbs/inch. Meaning: if you load 181 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 1018 lbs cargo on the boat it will sink 1 inch.

Sailing statistics

This section is statistical comparison with similar boats of the same category. The basis of the following statistical computations is our unique database with more than 26,000 different boat types and 350,000 data points.

What is Motion Comfort Ratio (MCR)?

What is L/B (Length Beam Ratio)?

What is a Ballast Ratio?

What is Displacement Length Ratio?

What is SA/D (Sail Area Displacement ratio)?

What is Relative Speed Performance?

Maintenance

When buying anti-fouling bottom paint, it's nice to know how much to buy. The surface of the wet bottom is about 31m 2 (333 ft 2 ). Based on this, your favourite maritime shop can tell you the quantity you need.

Are your sails worn out? You might find your next sail here: Sails for Sale

If you need to renew parts of your running rig and is not quite sure of the dimensions, you may find the estimates computed below useful.

UsageLengthDiameter
Mainsail halyard 31.9 m(104.7 feet)10 mm(3/8 inch)
Jib/genoa halyard31.9 m(104.7 feet)10 mm(3/8 inch)
Spinnaker halyard31.9 m(104.7 feet)10 mm(3/8 inch)
Jib sheet 9.8 m(32.3 feet)12 mm(1/2 inch)
Genoa sheet9.8 m(32.3 feet)12 mm(1/2 inch)
Mainsheet 24.6 m(80.8 feet)12 mm(1/2 inch)
Spinnaker sheet21.7 m(71.1 feet)12 mm(1/2 inch)
Cunningham4.0 m(13.0 feet)10 mm(3/8 inch)
Kickingstrap7.9 m(25.9 feet)10 mm(3/8 inch)
Clew-outhaul7.9 m(25.9 feet)10 mm(3/8 inch)

This section shown boat owner's changes, improvements, etc. Here you might find inspiration for your boat.

Do you have changes/improvements you would like to share? Upload a photo and describe what to look for.

We are always looking for new photos. If you can contribute with photos for Mamba 33 it would be a great help.

If you have any comments to the review, improvement suggestions, or the like, feel free to contact us . Criticism helps us to improve.

A NEW GENERATION...

Mamba custom boats, the new mamba 227vx, new mamba 24vx bay boat by waypoint customs (walk through), barry stokes – let's fish, new mamba boats may 2022, mamba boats 1, mamba boats 2, mamba boats 3.

  • Rent a Yacht & Boat
  • Rent a Motor Home
  • Rent a Caravan
  • Rent a Vacation Home
  • Stay Onboard a Boat
  • How Rentnjoy Works
  • Insurance & Safety
  • Listing Your Rental
  • Renting Support
  • Contact Rentnjoy
  • List Your Object

Comfortable and popular Mamba

Göteborg, sverige / sailboat.

mamba 33 sailboat

  • Description

Sailboat - Mamba 33 (1987)

Hyr den bästa familjebåten! Populär segelbåt med bra volym och goda seglings egenskaper som kan hanteras av en person viktig link . Motor Yanmar 18hk, diesel Segel, mast o rigg Storsegel Rullgenua med skot 7/8 dels rigg Däck Fall dragna till sittbrunn Sittbrunnsbord Badstege Sprayhood Mantåg delvis med nät Navigation Hamnböcker Översiktskort nr 92 Skagerack/Kattegatt Båtsportkort över Västkusten Kryssarklubbens bok över naturhamnar Nav. Bestick Logg Ekolod Chartplotter Kompass Kikare Kök & komfort Täcken och kuddar för angivet antal kojer Kupévärmare Landström 220V med kabel CD-spelare Batteriladdare 12 V uttag på elpanelen Tryckvattensystem Säkerhet Flytvästar Bergskilar/hammare VHF Nödraketer Brandsläckare Livboj Förbandslåda Övrigt Septiktank Toalett Levang med spann Städutrustning ombord

Skills Needed Sailing experience
Year 1987
Brand Mamba
Model 33
Length 33 feet
Width 3.3 meters
Guest capacity 6
Sleeping capacity 6
Closable Cabins 3
Displacement 4900 kg

SPACES & AMENITIES

(including service fee)

Cleaning fee

Security Deposit

paid at check-in

mamba 33 sailboat

English, Swedish

Response rate

0% of messages

We found more boats in Göteborg you might like

mamba 33 sailboat

Sailing holiday in Stockholm

It’s amazing.

115 EUR per day

Top condition for family and friends

Enjoy stockholm from seaside, view more rentals in göteborg », not sure where to start.

Use our concierge tool to begin customising the perfect trip. Provide us with just a few details about your desired trip & we’ll connect you with relevant boat owners & travel experts.

Message Sent Successfully

Add payment method.

A booking request is free of charge! To support our booking process, we need to know your prefered payment method. "Add your Payment Method". Add Payment Method

Review Successfully Deleted.

Successfully added to your favorites, submit your review, your review has been sent and is waiting for moderation..

Have you been a guest? Share your experience with the host and members of the rentjoy community!!! Tell us what was great about this rental? Do you recommend it to other members?

Ask Charles about this rental

en

  • Terms & Conditions
  • Trust & Safety
  • How To Take Great Photos

Popular destinations

  • Sweden, Gothenburg
  • Sweden, Stockholm
  • Sailing in Greece

MC, Visa, AMEX

© 2024 Rentnjoy. Terms of Service & Privacy Policy .

COMMENTS

  1. MAMBA 33

    MAMBA 33. Save to Favorites . Beta Marine. BOTH. US IMPERIAL. METRIC. Sailboat Specifications Definitions ... 1997), states that a boat with a BN of less than 1.3 will be slow in light winds. A boat with a BN of 1.6 or greater is a boat that will be reefed often in offshore cruising. Derek Harvey, "Multihulls for Cruising and Racing ...

  2. Mamba 33

    Mamba 33 is a 32′ 3″ / 9.9 m monohull sailboat designed by Bengt Karlsson and built by Mamba Boats and BK Marin AB between 1985 and 1991. ... Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay). D: ...

  3. Review of Mamba 33

    Fin keel. The Mamba 33 is equipped with a fin keel. A boat with a fin keel is more manoeuvrable but has less directional stability than a similar boat with a full keel. The keel is made of lead. Compared with iron, lead has the advantage of being 44% heavier, which allows a smaller keel and hence less water resistance and higher speed.

  4. MAMBA 33

    The MAMBA 33 is a sailing boat designed for racing and cruising. It is a high-performance yacht that offers a combination of speed, agility, and comfort. Here are some key features and specifications of the MAMBA 33: 1. Design: The MAMBA 33 is designed by the renowned naval architect Mark Mills. It features a sleek and modern hull design with a ...

  5. Mamba 33

    The Mamba 33 is a 32.32ft fractional sloop designed by Bengt Karlsson and built in fiberglass by Mamba Boats (SWE) between 1985 and 1991. The Mamba 33 is a moderate weight sailboat which is a good performer. It is very stable / stiff and has a low righting capability if capsized. It is best suited as a coastal cruiser.

  6. MAMBA 33

    MAMBA 33, designer Bengt Karlsson, builder Mamba Boat AB, Fin Keel, Fiberglass, Fractional Sloop, 32.32 feet News Directory Boats Builders/Suppliers Models Common

  7. mamba 33 sailboat

    Boat Information. Length: 9.85 m. Width: 3.27 m. Depth: 1.75 m. Weight: 4000 kg. Engine: Yanmar 2GM20 -1987 with straight shaft. Main sail: 2021. Roller genoa: 2021 ...

  8. Specifications MAMBA 33

    MAMBA 33 Sailboat Data Hull Type: Fin w/spade rudder Rigging Type: Fractional Sloop LOA: 32.32 ft / 9.85 m LWL: 27.23 ft / 8.30 m S.A. (reported): 517.00 ft² / 48.03 m² Beam: 10.73 ft / 3.27 m Displacement: 9,700.00 lb / 4,400 kg Ballast: 4,078.00 lb / 1,850 kg…

  9. Mamba 33

    Spacious sailboat for the family with four full-length berths and one berth at 1.65. Some details on the boat have been neglected and need some love. Canopy of unknown age and slightly worn, could use some impregnation. Main sail and roller genoa canopy in good condition but may need some repairs.

  10. Mamba Boats

    8 sailboats built by Mamba Boats. Sailboat. Mamba 31. 1978 • 30 ′ 8 ″ / 9.4 m Sailboat. Mamba 29. 1980 • 28 ′ 6 ″ / 8.7 m Sailboat. Mamba 34. 1978 • 33 ...

  11. Buy 1988 Mamba 33

    1988 Mamba 33 for sale. Used 1988 Mamba 33 for sale is located in Denmark.This vessel was designed and built by the Mamba shipyard in 1988. Key features 1988 Mamba 33: length 9.85 meters and beam 3.27 meters. 1 x yanmar engine: fuel type - diesel. 1988 Mamba 33 refers to classes: sailboats.To clarify the price DKK 299,900 and buy Mamba 33 - contact the offerer!

  12. Mamba 34

    Mamba 34 is a 33′ 4″ / 10.2 m monohull sailboat designed by Rolf Magnusson and built by Mamba Boats and BK Marin AB between 1978 and 1986. ... Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay). D: ...

  13. SailboatWorld

    MAMBA 33 Displacement. lbs Sail Area. feet 2. Ballast. lbs Waterline Length. ft ... the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. [-16] : under powered

  14. Købe 1988 Mamba 33

    1988 Mamba 33 til salg. Brugte 1988 Mamba 33 til salg er beliggende i Danmark.Dette fartøj blev designet og bygget af Mamba-værftet i 1988.Nøglefunktioner 1988 Mamba 33: længde 9,85 meter og bredde 3,27 meter. 1 x yanmar-motor: brændstoftype - diesel. 1988 Mamba 33 henviser til klasser: sejlbåde.For at afklare prisen 299.900 kr. og købe Mamba 33 - kontakt udbyderen!

  15. Mamba 33

    Choose Basic, Focus or Boost. To ensure your ad is with photo and info on the list pages and easily accessible on the details page, please choose Basic, Focus or Boost

  16. Review of Mamba 33

    The Mamba 33 is equipped with a finn keel. A boat with a fin keel is more manoeuvrable but has less directional stability than a similar boat with a long keel. The keel is made of lead. Compared with iron, lead has the advantage of being 44% heavier, which allows a smaller keel and hence less water resistance and higher speed. ...

  17. MAMBA 34

    33.33 ft / 10.16 m: LWL: ... more cruising oriented version called the MAMBA 341 was introduced in 1981. Sailboat Forum. ... Calculations Help. SA/Disp.: A sail area/displacement ratio below 16 would be considered under powered; 16 to 20 would indicate reasonably good performance; above 20 suggests relatively high performance. SA/D = SA (ft² ...

  18. Introducing

    The best boat hydrodynamics, new construction materials result in an efficient and stable ride. ... New Mamba 24vx Bay Boat by Waypoint Customs! (Walk Through) 10:56. Barry Stokes - Let's Fish 2:00. New Mamba Boats May 2022 0:33. Mamba Boats 1 0:12. Mamba Boats 2 0:20. Mamba Boats 3 0:14. Contact Info. Phone Number: 361-651-2628. Email: ...

  19. Rent Sailboat Mamba 33

    Sailboat - Mamba 33 (1987) Hyr den bästa familjebåten! Populär segelbåt med bra volym och goda seglings egenskaper som kan hanteras av en person viktig link. Motor. Yanmar 18hk, diesel Segel, mast o rigg. Storsegel.

  20. MAMBA 36

    Mamba Boats (SWE) Related Sailboats: BEASON 36 : Download Boat Record: Notes. It is thought that the BEASON 36, COMPIS 36 and MAMBA 36 are all based on the same design. ... x Beam^1.33), where displacement is expressed in pounds, and length is expressed in feet. Capsize Screening Formula (CSF): Designed to determine if a boat has blue water ...