¶Deuysed the manere for to lette and kepe the hauen fro the enemyes ¶Capitulo / xxxiiij / (Book 33)
By cause we haue said here by fore that for to assaylle a fortresse grete and stronge of whyche the one syde is vpon the see or vpon a grete rynere / were expedyent the for∣said appareylle to be hadde / It byhoueth also to aduyse how thayde and socours that by the see myght come to the sayd fortres myght be letted / It is to be knowen thenne / that there muste be hadde / x / or / xij / grete olde vesselles of the see that shal be charged with stones asmuche as they can bere whiche vesselles thus laden shal be broughte in to the haue∣ne of the said fortres or towne and there they shal be drow∣ned so that they shal compryse and fylle all the said hauene that noone other manere of shippe shalle mowe come theryn¦ne for to approche the said fortres nother by floode nor by hygh sprynge of watre / ¶And for suche vesselles to conveye by cause noo lettynge cowde be putte therto there shal be a gode captayne ordeyned that shal haue with hym fou∣re thousand men of armes and fyue hondred men of shot or moo / whiche shal be in other shippes and shall drawe after hem the sayd shyppes so laden with stones And yf eny gytee wharffe or eny brygge were there or som other grete ryuere wherby the dyches were fylled / this felawship myght breke hyt therwhiles and gyue an yssue to the watre for to haue hyr cours to another parte / And vpon the sayd shyppes so