[1] The headword (again epsilon 2489) has the same or similar glossing other lexica, and cf. the scholia to Thucydides 1.30.2.
[2] The kata/bolos is indeed a naval station (cf. LSJ s.v., epsilon 2489 end). But here the Suda appears to gesture at a sardonic usage from the parlance of ancient deepwater sailors: the harbor is shallow enough for a throw of the casting-net, bo/los. LSJ offers stewpond--a monastery garden's fishpond--or oyster-bank.
[3] The passage's readability is improved by inserting a noun, summa/xous ('allies') or stratiw/tas ('troops') at this point (Walbank, 747).
[4] Tarraco (Barrington Atlas map 25 grid G4; cf. OCD(4) s.v.), present-day Tarragona, Spain (cf. tau 110).
[5] Polybius fr. 43 Büttner-Wobst. As Büttner-Wobst (519) notes, the fragment, though unplaced, correlates well with the description in Livy 26.17.1-2 of Gaius Claudius Nero's (OCD(4) s.v.) occupation of Tarraco (211 BCE). Nero cornered Hasdrubal's (cf. alpha 4133) force, but the latter escaped through a ruse (Livy, ibid.). The water crossing executed by the Romans was probably over the mouth of the River Tulcis, west of Tarraco, not the Mediterranean Sea (Walbank, ibid.).