Step 1: Understanding the Concept:
This represents a specific-to-general category relationship (hyponymy).
Step 2: Key Formula or Approach:
Approach: A barge IS A TYPE OF vessel. Look for another "X is a type of Y" pattern.
Step 3: Detailed Explanation:
A barge is a large flat-bottomed boat, which is a type of vessel.
A shovel is a tool used for digging, which is a type of implement.
The other options are either part-to-whole (Rim/Edge) or different relationships.
Step 4: Final Answer:
The correct analogy is Shovel : Implement.