Instead , they developed a plan for a maritime siege , in order to starve the Song into submission .
Catapults as a weapon system were rejected by Kublai 's court , for they feared the Song fleet would break out if they used such weapons .
They developed a plan for a maritime siege , in order to starve the Song into submission .
Catapults as a weapon system were rejected by Kublai 's court , for they feared the Song fleet would break out if they used such weapons .