The Seaworthy Packs is a solemn poetic form intended to praise a journey, originating in The Insignia of Socks. The rules of the form are applied by poets to produce individual poems which can be recited. The poem is three tercets. A form of parallelism is common throughout the poem, in that certain lines often share an underlying meaning. Each line has seven syllables. The third line of each tercet presents a different view of the subject of the first line. The third line of each tercet must expand the idea of the first line. The rhyme scheme of the poem is AAB.