Final answer:
The Disbursing Officer is responsible for coordinating all Navy Cash collections to be registered to a Line of Accounting, ensuring proper handling and accurate recording of financial transactions.
Step-by-step explanation:
The individual responsible for coordinating all Navy Cash collections that must be registered to a Line of Accounting (LOA) is the Disbursing Officer. The Disbursing Officer has the duty of managing financial transactions, including collections, and is accountable for ensuring the proper handling and recording of the transactions in accordance with financial regulations. This role involves close monitoring of the collections and the maintenance of accurate records to track the financial movements associated with the Navy Cash program.