ships {MASS} | R Documentation

## Ships Damage Data

### Description

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

### Usage

    data(ships)

### Format

`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

### Source

P. McCullagh and J. A. Nelder, (1983), Generalized Linear Models. Chapman & Hall, section 6.3.2, page 137