Review of Dynamic 35

Dynamic 35
Dynamic 35.

Basic specs.

sail specifications
The Dynamic 35 is a sailboat designed by the Danish maritime architect Jan Kjærulff in the mid eighties. The Dynamic 35 is built by the Danish yard Bachs Bådværft A/S.

Looking for a new boat? Find a Dynamic 35 or similar boat for sale

The hull is made of hand laid fibreglass while the deck is made of fibreglass. Generally, a hull made of hand laid fibreglass requires only a minimum of maintenance during the sailing season.
The hull is a double hull which improves the indoor climate. Especially when the water is colder than the air in the cabin, then the double hull insulates against cold water and reduce the condense water in the cabin.
The deck is a double deck which improves the indoor climate.

The interior is like many other boats made of mahogany.
The boat is equipped with 2 cabins, 5 berths, a galley and toilet facility.

Rig of Dynamic 35 anno 1988. Dynamic-35 purchased from Slovenia to Finland 2004.Original owner German sailor Build 1988 Purchasd to Finland 2004
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 Dynamic 35 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. The boat can enter most marinas as the draft is just about 1.60 - 1.70 meter (5.25 - 5.55 ft) dependent on the load. See immersion rate below.

Dynamic 35 is typically equipped with an inboard Volvo Penta 2001 diesel engine at 9.0 hp (6 kW), which gives a max speed about 4.8 knots.
The transmission is a saildrive.
The fuel tank which is made of stainless steel has a capacity of 20 liters (5 US gallons, 4 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.

Stability and Safety
What is Capsize Screening Formula (CSF)?
The capsize screening value for Dynamic 35 is 1.73, 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 7.5 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 Dynamic 35 is about 159 kg/cm, alternatively 891 lbs/inch.
Meaning: if you load 159 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 891 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 Dynamic 35 is 19.7.

Low High 15% 0 50 100
Comparing this ratio with similar sailboats show that it is more comfortable than 15% of all similar sailboat designs. This is a comfort value significantly below average.

L/B (Length Beam Ratio)
What is L/B (Length Beam Ratio)?
The l/b ratio for Dynamic 35 is 4.27.

Wide Slim 100% 0 50 100
Compared with other similar sailboats it is slimmer than 100% 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'.

Ballast Ratio
What is a Ballast Ratio?
The ballast ratio for Dynamic 35 is 43%.

Low High 66% 0 50 100
This ballast ratio shows a righting moment that is higher than 66% of all similar sailboat designs. A righting moment (ability to resist heeling) just above average.

D/L (Displacement Length Ratio)
What is Displacement Length Ratio?
The DL-ratio for Dynamic 35 is 100 which categorizes this boat among 'ultra light racers'.

Heavy Light 96% 0 50 100
96% 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 Dynamic 35 with ISO 8666 reference sail is 24.0, with a 135% genua the SA/D is 27.5.

Low High 99% 0 50 100
The SA/D ratio indicates that it is faster than 99% of all similar sailboat designs in light wind.

Over- / underrigged
Low High 100% 0 50 100
The Dynamic 35 has more rig than 100% of all similar sailboats, which indicates that the boat is significantly overrigged.

RSP (Relative Speed Performance)
What is Relative Speed Performance?
The Relative Speed Performance for Dynamic 35 is 99

Slow Fast 99% 0 50 100
The relative speed performance is 99 which means that a it is faster than 99% of all similar sailboat designs.


Bottom Paint
When buying anti-fouling bottom paint, it's nice to know how much to buy. The surface of the wet bottom is about 29m2 (312 ft2).
Based on this, your favourite maritime shop can tell you the quantity you need.
Note: If you use a paint roller you will need more paint than if you use a paintbrush.

Dimensions of sail for fractional 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
Mainsail halyard 33.8 m(110.9 feet)12 mm(1/2 inch)
Jib/genoa halyard33.8 m(110.9 feet)12 mm(1/2 inch)
Spinnaker halyard33.8 m(110.9 feet)12 mm(1/2 inch)
Jib sheet 10.7 m(35.0 feet)14 mm(0.55 inch)
Genoa sheet10.7 m(35.0 feet)14 mm(0.55 inch)
Mainsheet 26.7 m(87.6 feet)14 mm(0.55 inch)
Spinnaker sheet23.5 m(77.1 feet)14 mm(0.55 inch)
Cunningham4.5 m(14.8 feet)12 mm(1/2 inch)
Kickingstrap9.0 m(29.5 feet)12 mm(1/2 inch)
Clew-outhaul9.0 m(29.5 feet)12 mm(1/2 inch)

We are always looking for new photos. If you can contribute with photos for Dynamic 35 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.