Across
- 3. God of the Sea
- 6. Maker of the P-8A radar and mission systems
- 9. Relating to the sea
- 10. Floats and listens
Down
- 1. Base in Scotland
- 2. Radio waves plus echoes
- 4. Uses returns rather than reflections
- 5. Weapon whose domain begins where air breathing seizes
- 7. - 3 letter naval warfare acronym
- 8. To keep watch