Section 19-305. Staten Island Ferry service.

a. Any city owned and operated
  ferry operating  between  the  Whitehall  terminal  in  the  borough  of
  Manhattan  and  the  St. George terminal in the borough of Staten Island
  shall operate, at a minimum, according to the following schedule: (i) On
  monday through friday, except on legal holidays, a  ferry  shall  depart
  from  the  Whitehall  terminal  in the borough of Manhattan every twenty
  minutes between 6:30 a.m. and 8:30 a.m.; every fifteen  minutes  between
  8:30 a.m. and 9:30 a.m.; every thirty minutes between 9:30 a.m. and 4:00
  p.m.;  every  twenty  minutes  between  4:00  p.m.  and 5:00 p.m.; every
  fifteen minutes between 5:00 p.m. and 7:00 p.m.;  every  twenty  minutes
  between  7:00 p.m. and 8:00 p.m.; every thirty minutes between 8:00 p.m.
  and 1:30 a.m.; and every hour between 2:00 a.m. and 6:00 a.m.
    (ii) On monday through friday, except on legal holidays, a ferry shall
  depart from the St. George terminal in the borough of Staten  Island  at
  5:30  a.m.;  every twenty minutes between 6:00 a.m. and 7:00 a.m.; every
  fifteen minutes between 7:00 a.m. and 9:00 a.m.;  every  thirty  minutes
  between  9:00 a.m. and 3:30 p.m.; every twenty minutes between 3:30 p.m.
  and 5:30 p.m.; every fifteen minutes between 5:30 p.m.  and  7:00  p.m.;
  every  thirty  minutes  between  7:00 p.m. and 1:00 a.m.; and every hour
  between 1:00 a.m. and 5:00 a.m.
    (iii) On Saturdays, except on legal holidays, service both to and from
  Manhattan's Whitehall terminal and Staten Island's St.  George  terminal
  shall be every hour except between the hours of 6:00 a.m. and 7:00 p.m.,
  in which case service shall be every thirty minutes.
    (iv)  On  Sundays,  except on legal holidays, service both to and from
  Manhattan's Whitehall terminal and Staten Island's St.  George  terminal
  shall be every hour except between the hours of 9:00 a.m. and 7:00 p.m.,
  in which case service shall be every thirty minutes.
    (v)  On legal holidays, service both to and from Manhattan's Whitehall
  terminal and Staten Island's St. George  terminal  shall  include  ferry
  departures  every thirty minutes between the hours of 7:00 a.m. and 7:00
  p.m.
    b. The schedule of service set forth in subdivision a of this  section
  shall not apply to service disruptions resulting from security concerns,
  mechanical   malfunctions   of   a  ferry,  unsafe  weather  conditions,
  emergencies or other similar events beyond the control of the department
  that would prevent compliance with such schedule. In the  event  of  any
  such disruption in the schedule of service set forth in subdivision a of
  this  section that lasts longer than twenty-four hours, the commissioner
  or a designee shall submit a written report to the mayor and speaker  of
  the  council which shall include the specific reasons for the disruption
  and the time at which service was restored.  If  service  has  not  been
  restored by the time the report must be submitted, the report shall also
  include the estimated duration of the disruption in service and what, if
  any,  attempts are being made to mitigate the loss of scheduled service.
  In the event a disruption in the schedule of service lasts  longer  than
  seven  days,  on  the  eighth  day  and every seven days thereafter, the
  commissioner or a designee shall submit a written report  to  the  mayor
  and speaker of the council that shall include an update on the status of
  resuming service.
    c. The commissioner shall provide the council with comprehensive ferry
  ridership  numbers  for  each  departure time slot on the ferry schedule
  every two months for a continuous twelve-month period. Such period shall
  commence upon the installation and implementation  of  the  department's
  rider  counting  mechanisms  at  both Manhattan's Whitehall terminal and
  Staten Island's St. George terminal or upon the effective date  of  this
  subdivision,  whichever  is later. At the conclusion of the twelve-month
  period, the  commissioner  shall,  in  consultation  with  the  council,

  consider such ridership information, as well as economic development and
  mass  transportation  equity  issues,  for purposes of adding additional
  departures in Staten Island ferry service.