To find the new position of the submarine after it descends further, you can start with its initial depth and add the additional descent.
- The initial position of the submarine is -550 feet (below sea level).
- It descends an additional 108 feet.
To calculate the new position, you can use the equation:
\[ \text{New Position} = \text{Initial Position} - \text{Descent} \]
\[ \text{New Position} = -550 - 108 = -658 \text{ feet} \]
Therefore, the new position of the submarine is -658 feet below sea level.