English to Indonesian Other Transport / Transportation / Shipping

We sailed following the path of the river wherein laid several dead old trees and tsunami debris from surrounding structures. Other boats repaired by MC sailed along side by side with us. Visible in a distance were three big fuel boats belonging to the national oil company, Pertamina. We reached the shore in about 15 minutes.

Apakah 'fuel boat' disini berarti:
1. perahu yang menggunakan bahan bakar, atau
2. perahu yang mengangkut bahan bakar

Thanks