"little fishing boats strung out like bunting"
Garland uses a simile to compare the boats to something beautiful.
"Bunting" - typically used as decoration during a celebration - and it is beautiful to look at.
The beauty of the boats is important as it makes the soldier realise that there is more to live for than honour and respect. It gives him a flashback to when he was younger which reiterates that he doesn't want to die.
The fact that she has the soldier realise that there is more in life worth living for, reiterates her opinions that these kamikaze missions are futile.