

ships(MASS)                                  R Documentation

_S_h_i_p_s _D_a_m_a_g_e _D_a_t_a

_D_e_s_c_r_i_p_t_i_o_n_:

     Data frame giving the number of damage incidents and
     aggregate months of service by ship type, year of con-
     struction, and period of operation.

_A_r_g_u_m_e_n_t_s_:

    type: type: `"A"' to `"E"'

    year: year of construction: 1960-64, 65-69, 70-74, 75-79
          (coded as `"60"', `"65"', `"70"', `"75"')

  period: period of operation : 1960-74, 75-79

 service: aggregate months of service

incidents: number of damage incidents

_F_o_r_m_a_t_:

_S_o_u_r_c_e_:

     P. McCullagh and J. A. Nelder, (1983), Generalized Lin-
     ear Models.  Chapman  Hall, section 6.3.2, page 137

