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Review of LA-krydser


LA-krydser
LA-krydser anno 1963.


Basic specs.

sail specifications
The LA-krydser aka LA-Kreuzer is a sailboat designed by the Danish maritime architect Bjørn Olsen in the late fifties.

Looking for a new boat? Find a LA-krydser or similar boat for sale

Interior

The interior is like many other boats made of mahogany. Mahogany belongs to the hardwood species, known for being water-repellent and resistant to decay. It has an attractive wood grain and holds wood polish and varnish well.
The boat is equipped with 4 berths, a galley and toilet facility.


Rig
Rig
Rig of LA-krydser anno 1964. Carlolga ved mastekranen

The LA-krydser is equipped with a masthead rig. The advantage of a masthead rig is its simplicity and the fact that a given sail area - compared with a fractional rig - can be carried lower and thus with less heeling moment.


Keel
Keel
Keel of LA-krydser anno 1965.

Unknown keel type


Engine

The LA-krydser has been equipped with different engine alternatives.

Alternative 1:

The boat may be equipped with an inboard diesel engine

Alternative 2:

LA-krydser may be equipped with an inboard engine


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.

Stability and Safety

What is Capsize Screening Formula (CSF)?

The capsize screening value for LA-krydser is 1.66, indicating that this boat could - if evaluated by this formula alone - be accepted to participate in ocean races.


Theoretical Maximum Hull Speed

What is Theoretical Maximum Hull Speed?

The theoretical maximal speed of a displacement boat of this length is 6.7 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.


Immersion rate

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for LA-krydser is about 125 kg/cm, alternatively 703 lbs/inch.
Meaning: if you load 125 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 703 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.

Motion Comfort Ratio

What is Motion Comfort Ratio (MCR)?

The Motion Comfort Ratio for LA-krydser is 19.2 - 26.4.

Low High 69% 0 50 100
Comparing this ratio with similar sailboats show that it is more comfortable than 69% of all similar sailboat designs. This comfort value is just above average.


L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for LA-krydser is 3.63.

Wide Slim 95% 0 50 100
Compared with other similar sailboats it is slimmer than 95% of all other designs. It seems that the designer has chosen a significantly more speedy hull design. This type of design is also referred to as 'needle'.


D/L (Displacement Length Ratio)

What is Displacement Length Ratio?

The DL-ratio for LA-krydser is 177 which categorizes this boat among 'light racers'.

Heavy Light 85% 0 50 100
85% of all similar sailboat designs are categorized as heavier. A light displacement requires less sailarea and has higher accellerations.


SA/D (Sail Area Displacement ratio)

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

The SA/D for LA-krydser with ISO 8666 reference sail is 12.5, with a 135% genua the SA/D is 14.4.

Low High 14% 0 50 100
The SA/D ratio indicates that it is faster than 14% of all similar sailboat designs in light wind.


RSP (Relative Speed Performance)

What is Relative Speed Performance?

The Relative Speed Performance for LA-krydser is 14

Slow Fast 14% 0 50 100
The relative speed performance is 14 which means that a it is faster than 14% of all similar sailboat designs.


Maintenance

Rig

Dimensions of sail for masthead rig.

mainsail specifications genoa specifications spinnaker specifications

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.



Guiding dimensions of running rig
UsageLengthDiameter
Mainsail halyard 23.8 m(78.1 feet)8 mm(5/16 inch)
Jib/genoa halyard23.8 m(78.1 feet)8 mm(5/16 inch)
Spinnaker halyard23.8 m(78.1 feet)8 mm(5/16 inch)
Jib sheet 8.9 m(29.2 feet)10 mm(3/8 inch)
Genoa sheet8.9 m(29.2 feet)10 mm(3/8 inch)
Mainsheet 22.2 m(73.0 feet)10 mm(3/8 inch)
Spinnaker sheet19.6 m(64.2 feet)10 mm(3/8 inch)
Cunningham3.5 m(11.5 feet)8 mm(5/16 inch)
Kickingstrap7.0 m(23.0 feet)8 mm(5/16 inch)
Clew-outhaul7.0 m(23.0 feet)8 mm(5/16 inch)

Boat owner's ideas

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.



Finally

We are always looking for new photos. If you can contribute with photos for LA-krydser 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.



References