We can cross the TOKYO BAY easy from Kawasaki!
"Tokyo Bay from UMIHOTARU"
If you use Aqua Line(Highway), which connect between KAWASAKI and KISARAZU(Chiba),you can cross the Tokyo bay only one hour.
We used a bus from Kawasaki station and cost was 1500yen per one person.

Map of Kawasaki's branch lines
Yamato takeru
ARCO ILIS