Letter (a) extends cover in those cases where the vessel has "stranded". The word "stranded" must be read as synonymous to "grounding". Thus cover is extended to all cases where the vessel is prevented from moving because it is stuck on the seabed, regardless of whether the vessel drifted ashore or was moving under its own power. The cause of the grounding is immaterial, as long as it is due to a peril covered under the policy, see 2 above, and the exclusions from cover in Chapter 3 do not apply. However, the Commentary to letter (a) underscores the following limitation on the perils covered:
“To say that the ship “has stranded” means that the stranding must be in the nature of a casualty, even though there is no requirement that the stranding resulted in damage. If, on the other hand, the stranding is a consequence of “ordinary use”, for instance foreseeable stranding during navigation on a shallow river, cf. Cl. 10-3, the insurer is not liable for the loss of time”
It is difficult to imagine that this extension of cover will result in any significant payments from the insurer because if the grounding is so light that there is no damage to the vessel, the delay will seldom reach beyond the deductible period. If the unlikely should occur, i.e. that the vessel is aground without any damage but the vessel cannot be moved, Cl. 16-2 will prevent the assured from recovering under the loss of hire insurance if the hull insurer pays out total loss compensation, see further under 4.3 below.