(1) If the third party is granted deferral of payment of the purchase price in the contract, the person entitled to preemption may claim the deferral only if they provide security for the amount deferred.
(2) If a plot of land is the subject matter of the preemption, there is no need to provide security to the extent that there has been an agreement to create a mortgage on the plot of land for the deferred purchase price, or a debt for which a mortgage on the land exists has been assumed and credited towards the purchase price. This applies accordingly if a registered ship or ship under construction is the object of the right of preemption.