1. The boat is for sale for $8,000.
2. The bank will only loan $6,000 on the boat.
3. His banker wants him to purchase a $2,000 CD from the bank THEN the bank will loan him $8,000 ($6,000 with the boat being collateral and $2,000 with his CD being the collateral).
So...if he has $2,000 to purchase a CD then he only needs to borrow $6,000 to begin with.