S42 Explained
S42 may refer to:
Aviation
Rail and transit
- S42 (Berlin), a railway line of the Berlin S-Bahn, Germany
- S42 (Long Island bus)
- S42 (New York City bus), serving Staten Island
- S42 (ZVV), a railway line of the Zurich S-Bahn, Switzerland
Science
- S-42 (geodetic datum), used in Eastern Europe
- , a safety phrase
- Sulfur-42, an isotope of sulfur
Submarines
- , of the Argentine Navy
- , of the Royal Navy
- , of the Indian Navy
- , a submarine of the United States Navy
Other uses