Plant 4 Makeshift Dynamite near the sunken ship at Sapphire's End. Makeshift Dynamite must be placed at least 10 yards apart.
I must ask you to do one more thing for me, <name>.
The personal effects on this ship cannot be left for others to find. We'll have to destroy it.
I cobbled together some Makeshift Dynamite from the scraps you brought me.
Place the dynamite anywhere on the ship, but take care not to put them too close together.
They might be...uh...a little unwieldy, so you should spread them out in case of premature detonation.