Context: речь идет о прогулочном судне
Unless otherwise agreed because of specific criteria, the following margins of error are acceptable under the contract:
 1% in length from prow to stern;
 1% in width overall
 1% Depth
 5% draught;
 2% standing room beneath the beams;
 1% maximum height above the water level;
 10% weight;
 5% engine capacity;
 10% speed (with standard fittings).