Along TSS Terschelling-German Bight container vessels are at risk of losing containers and touching the seabed during heavy sea conditions,
in particular with waves from a west-northwest to north-easterly direction.
-	From a wave height of 3.0m, container vessels with a length of 100-200m  
	should alter course if necessary to avoid coming abeam to the waves and take
	other appropriate measures to avoid losing containers. 
-	From a wave height of 4.0m, all container vessels should alter course
	if necessary to avoid coming abeam to the waves and take other appropriate
	measures to avoid losing containers. container vessels with a length above 200m,
	are strongly advised to follow an alternative route via TSS East Friesland.