From a scholion on Thucydides 1.136.2, where the headword (aorist infinitive of katalu/w: kappa 639) occurs in the intransitive sense translated here (of the fugitive Themistokles staying with the Molossian king Admetos): see web address 1, and LSJ s.v. katalu/w, II.2. The scholiast seems to be suggesting -- unconvincingly -- that the verb itself implies that a journey interrupted thus is one made by land transport. For kata/gein in the sense of 'put in to shore' see LSJ s.v. kata/gw, 4.