EP0058626A1 - Stabilizing device for a dinghy - Google Patents

Abstract

Stabilization device for boats comprising an oblique floor (2) inclined from the anière (3) towards the front (4), forming the bottom of the boat.

Description

The object of the invention relates to a boat stabilizing device.

It is intended for equipping ships fitted with V-shaped hulls to ensure their stabilization when stationary.

In known devices, a tunnel or water ballast generally used is installed along the keel or in the hull.

This tubular element can be provided with a large opening at the rear and a vent at the front.

These devices, to be effective, caused an increase in displacement by the entry of water into the boat, which weighed down could no longer avoid the effect of the waves when stationary.

This tunnel creates a longitudinal axis which facilitates the lateral overturning of the boat.

It decreases the dip while raising the center of gravity, which results in a loss of stability. When starting up, the water contained in this capacity does not empty instantly, so that the movement requires significant energy consumption. on the other hand, if you stop during start-up, the water remaining in the partially empty tunnel quickly evacuates forward and causes the boat to nose down, which must therefore have a higher freeboard and a greater weight.

The device according to the invention eliminates these drawbacks and makes it possible to keep the boat in a V-shaped fairing having a maximum of marine qualities in working order while giving it at rest the stability which the flat-bottomed boats have.

It consists of a flat bottom of triangular shape under which is positioned a capacity of triangular section with full opening at the height of the base of the rear panel representing the large base, while the volume and width of this prismatic or pyramidal element goes tapering to end in a point at the front, extending by a conduit opening into a vent running along the bow to its upper part.

• La figure 1 représente vue en élévation et de profil la coque en V. Les figures 2 et 3 montrent vue en élévation les faces avant et arrière du bateau. Les figures 4 et 5 sont des vues en plan par en dessous et en perspective de la capacité formant le profil en V de section triangulaire. Les figures 6, 7, 8 représentent les positions prises par l'élément stabilisateur lors du déplacement de l'embarcation.

In the accompanying drawings, given by way of nonlimiting example, of one of the embodiments of the subject of the invention:

• Figure 1 shows an elevation and profile view of the V-shaped hull. Figures 2 and 3 show an elevation view of the front and rear sides of the boat. Figures 4 and 5 are plan views from below and in perspective of the capacity forming the V-profile of triangular section. Figures 6, 7, 8 show the positions taken by the stabilizing element when moving the boat.

Boat 1 comprises a V-shaped fairing and an oblique floor 2 inclined from the rear 3 towards the front 4.

This triangular waterproof floor forms the bottom of the boat.

It constitutes with the fairing a profiling. in V whose capacity 6 of triangular section 7 with total opening extends the rear panel 5 (fig 2).

The volume of this triangular capacity is of pyramidal or prismatic section has a decreasing volume (fig 4, 5) so that the end point of the edge 4 is continued by the profile of the stem 9 which extends the edge of the V and ends with a conduit 10 opening into a vent 11.

This venting can serve as a chain well.

Water circulates freely in this capacity 6, but remains there in a static manner.

During the stop in Figures 1, 6 the boat weighs only its own weight and also only displaces its own weight in water.

It floats on its flat floor, while water fully fills capacity 6.

Its stability is that of a flat-bottomed boat.

Only a floating anchor effect can be added per reaction if the rear bottom of the V-shaped hull is swimming in the water. In no case does the water act as ballast.

On the other hand, during the start-up of FIG. 7, under the effect of a force pushing it forward, a stranslation of stability of shapes at standstill takes place or a dynamic stability of por tance due to the profiles of the bottoms of the V-shaped hull

There is then suppression of the aunt anchor effect. The water stays put and the boat comes out of the water.

We suppress all the reactions that a ballast would create.

The side effects due to friction are to be eliminated as much as possible so as not to disturb the water which is not part of the boat, thus the vent 11 serves to prevent a pressure or depression of the air which could disturb the water. .

Finally, in running order, stability is only ensured (Figure 8) by the lift of the V-shaped hull.

However, the shapes, dimensions and arrangements of the various elements may vary within the limit of the equivalents, as moreover the materials obtained for their manufacture without thereby changing the general design of the invention which has just been described.

Claims (2)

1. Boat device intended to equip boats with V-shaped hulls so that when stationary the boat rests on its flat bottom, and in working condition only the V-shaped hull becomes load-bearing, characterized by positioning under the triangular flat bottom (2) of a capacity that is also triangular (6) in the vertical plane (7) and in the horizontal plane (8) extending towards the front part (4) with progressive degression. 2. Device according to Claim 1, characterized in that this capacity (6) of vertical (7) and horizontal (8) trinagular section (V) in the form of a V fixed under the floor (2) has a total opening and gradually decreases in volume for stop at the birth of the stem (9) where it is connected by conduit (10) to the vent (11) leading to the upper part of the stem.

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