| ships {MASS} | R Documentation |
Data frame giving the number of damage incidents and aggregate months of service by ship type, year of construction, and period of operation.
ships
typetype: "A" to "E".
yearyear of construction: 1960–64, 65–69, 70–74, 75–79
(coded as "60", "65", "70", "75").
periodperiod of operation : 1960–74, 75–79.
serviceaggregate months of service.
incidentsnumber of damage incidents.
P. McCullagh and J. A. Nelder, (1983), Generalized Linear Models. Chapman & Hall, section 6.3.2, page 137