Here begynneth the table of the rubryshys of the boke of the fayt of armes and of chyualrye whiche sayd boke is departyd in to foure partyes ...

¶Deuysed the manere for to lette and kepe the hauen fro the enemyes ¶Capitulo / xxxiiij /

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

drowned as it is said may be made two bastilles that shul¦de be made in manere as bolwerkes / that is to wite an edy∣fyce made with grete tymbre as highe as men wil / whiche may soone be doon that hath help ynoughe and thys bastylle muste be aduironned with hirdels aboute and dawbed thyk¦ke with erthe and clay therupon / and it may be sette vpon wheles / And this edyfyce feereth nother fyre nor stroke of gonne by cause the pellettes and stones that are shot fown¦dren depe in to the erthe that softe is / nor ••yre may not take therto / And the bastille of whiche is spoken bifore made with palysses ought to begynne atte this bastille made of erthe / And thus to goo rounde aboute the fortres or towne who that may from that one bastylle made with palisses to that other bastylle made of erthe / And al thus by takyng awaye of the ryuere and to doo after this manere yf the pla¦ce be so dysposed the dyches shal be made dreye / And wyth thys men shall mowe make a gytee aboute the toune in ma¦nere as bolwerkes as it is said / by cause noo gonne nor noo manere of shotte shall hurte the ost / And by al thus men shal mowe myne the castel or towne syn the watre is taken from hym / and when the catte and the bewfrais shal∣be lefte vp and dressed / and that the gonnes shal haue bro∣ken the walles / then shal men surely assaylle