VETUS Hydraulic Stabilizers

Motor yachts over 10 metre length are frequently used on open waters. VETUS stabilizers are the ideal solution for dramatically reducing the rolling movement of these vessels in bad weather or in heavy swells.

Stabilizers consist of a hydraulically actuated pair of fins that are fitted to a vessel’s port and starboard midships sections underwater. They are controlled by an on board gyroscope and automatically react to the rolling movement of the vessel to create a damping effect. In other words, rolling motion is reduced considerably by the use of VETUS stabilizers, resulting in increased comfort and reduced risk of seasickness.

Stabilizers can to some extent, be compared with an aircraft’s ailerons, which considerably reduces movement in bad weather.

Do they effect speed?

Speed reduction is negligible in smooth water (for example 1 knot at 25 knots for a 25 metre vessel). In heavy seas it has an advantage as the boat rolls less giving it a lower wetted area.

VETUS stabilizers
STAFIN03A

STAFIN03A

Set (2 pieces)

  1. 142
  2. 431
  3. 620
  4. 798
  5. 0,3
STAFIN04A

STAFIN04A

Set (2 pieces)

  1. 176
  2. 497
  3. 716
  4. 921
  5. 0,4
STAFIN05B

STAFIN05B

Set (2 pieces)

  1. 215
  2. 554
  3. 801
  4. 1024
  5. 0,5
STAFIN06B

STAFIN06B

Set (2 pieces)

  1. 250
  2. 600
  3. 873
  4. 1125
  5. 0,6
STAFIN07B

STAFIN07B

Set (2 pieces)

  1. 291
  2. 605
  3. 1021
  4. 1318
  5. 0,7
STA24VA

STA24VA

Set Stabilizer electric 24V

  • “Plug and Play” installation for steel, GRP and aluminum vessels
  • Fully automatic operation
  • The fin movement is automatically adjusted according to the degree of damping selected, the speed of the vessel and the sea state
  • All electronic components are solid state

Other parts available

STATHA

Set of hull outlets for aluminium vessels

STATHG

Set of hull outlets for polyester vessels

STATHS

Set of hull outlets for steel vessels

STA12/24

Inverter

Calculating the correct size

Which Size?

B = The waterline beam in meters
D = The displacement in metric tons
T = The roll period in seconds
V = The cruising speed in knots

Example

A 13.5 m motor yacht has waterline beam of 3.6 metre. The displacement is 23 metric tons and the cruising speed is 8.5 knots. Roll period is 3.5 sec.

 

The fin size can be calculated using the following formula:
fin surface sum

The recommended fin size is as follows:
stabilizer equasion

Thus, a fin size of 0.4 m2 should be chosen or 0.3 m2 if space is restricted.

BRITISH MARINE LOGO PROUD MEMBER TAG WHITE RGB

United Marine Services are proud members of The British Marine Federation, you can find us listed here.

iso 9001

ums

6 Hythe Marine Park,
Shore Road,
Hythe,
Southampton,
United Kingdom.
SO45 6HE
TEL: 02380 846222