WARNINGRIVA declines all responsibility for the improper use of the yacht, in relation to the wave height conditions.
Your yacht has been designed for a safe and comfortable use, under all weather and sea conditions, bad or favourable; in any case, the navigation safety (especially with bad weather) depends mainly on the Captain’s behaviour, who should either not set off or reduce the yacht’s speed, sometimes considerably, and steer the yacht with the proper attitude.
It is very important during navigation with harsh weather, to make sure that all pieces of furniture, hatches, and mobile parts, are duly fastened or stowed, to avoid damages and especially to avoid hurting persons on board.
The reliability of the machinery, also due to a perfect maintenance, the scrupulous check during the pre-navigation phase and a Captain of proven experience assume, under adverse sea and weather conditions, an even greater importance.
The following table shows the maximum speed allowed in function of the wave height, in order to safeguard the yacht structural integrity.
| Speed (knots) | Significant wave height (metres) |
| 10 | 2,98 |
| 11 | 2,63 |
| 12 | 2,34 |
| 13 | 2,10 |
| 14 | 1,90 |
| 15 | 1,74 |
| 16 | 1,59 |
| 17 | 1,47 |
| 18 | 1,36 |
| 19 | 1,27 |
| 20 | 1,18 |
| 21 | 1,11 |
| 22 | 1,04 |
| 23 | 0,98 |
| 24 | 0,93 |
| 25 | 0,88 |
| 26 | 0,84 |
| 27 | 0,79 |
| Beaufort Scale | Descriptive Term | Wind speed | Probable Wave Height (metres) | ||
| m/sec | knots | average | max | ||
| 0 | Calm | 0 - 0,2 | until 1 | ||
| 1 | Light air | 0,3 - 1,5 | 1 - 3 | 0,1 | 0,1 |
| 2 | Light breeze | 1,6 - 3,3 | 4 - 6 | 0,2 | 0,3 |
| 3 | Gentle breeze | 3,4 - 5,4 | 7 - 10 | 0,6 | 1,0 |
| 4 | Moderate wind | 5,5 - 7,9 | 11 - 16 | 1,0 | 1,5 |
| 5 | Gentle wind | 8,0 - 10,7 | 17 - 21 | 2,0 | 2,5 |
| 6 | Fresh wind | 10,8 - 13,8 | 22 - 27 | 3,0 | 4,0 |
| 7 | Strong wind | 13,9 - 17,1 | 28 - 33 | 4,0 | 5,5 |
| 8 | Gale | 17,2 - 20,7 | 34 - 40 | 5,5 | 7,5 |
| 9 | Strong gale | 20,8 - 24,4 | 41 - 47 | 7,0 | 10,0 |
| 10 | Storm | 24,5 - 28,4 | 48 - 55 | 9,0 | 12,5 |
| 11 | Violent storm | 28,5 - 32,6 | 56 - 63 | 11,5 | 16,0 |
| 12 | Hurricane | over 32,7 | over 64 | 14,0 | |
WARNINGRIVA declines all responsibility for the improper use of the yacht, in relation to the wave height conditions.
WARNINGBefore undertaking navigation, it is necessary to be aware of the sea and weather conditions you will find along the transfer route and in the area you want to reach.