1-38. The detachment determines what infiltration technique to use by the distance from the debarkation point to the BLS. For example, if the debarkation point from the primary vessel is 20 nautical miles offshore, the detachment uses a combat rubber raiding craft (CRRC) to bring them within range of the beach. Airdrops or helocasts can also deliver the detachment to a debarkation point. If the enemy situation permits, the same delivery systems could transport the detachment within swimming range of the BLS. Regardless of the combinations of delivery craft used, the distance should be no more than what the operational detachment can swim or travel by boat within the time available. The detachment should always use the simplest method possible to reduce potential equipment failures.