Submarines
| W | E | G | R | A | H | C | H | T | P | E | D | M | I |
| B | I | V | I | S | E | T | Q | H | F | S | S | P | Z |
| U | M | R | H | U | L | L | N | N | I | U | T | E | T |
| L | U | H | H | T | L | D | U | P | R | L | S | R | B |
| K | S | A | R | E | O | C | E | T | W | I | A | I | A |
| H | A | U | S | E | L | R | K | A | S | T | L | S | Q |
| E | C | E | B | E | L | L | P | O | K | U | L | C | N |
| A | I | T | A | M | E | L | N | E | E | A | A | O | E |
| D | J | R | A | K | E | A | E | O | D | N | B | P | A |
| T | A | T | R | H | R | R | E | P | L | O | Y | E | T |
| R | C | O | N | N | I | N | G | T | O | W | E | R | H |
| L | N | X | C | O | O | Z | S | E | S | R | E | C | O |
| S | N | P | R | E | D | D | U | R | U | V | P | X | G |
| J | H | O | G | Y | F | B | N | J | D | R | O | H | I |
- BALLAST
- BULKHEAD
- CONNINGTOWER
- DEPTHCHARGE
- DIESEL
- HATCH
- HULL
- NAUTILUS
- NUCLEAR
- PERISCOPE
- PROPELLER
- RUDDER
- SNORKEL
- SONAR
- SUBMERGE
- TORPEDO
Dive below the surface with the parts and gear that make a sub run silent. Periscopes, torpedoes, and sonar sit next to the ballast tanks and bulkheads that let a boat submerge and surface. It's a good fit for naval-history fans and curious kids alike. Play it in your browser or print it out.