+---------+-------------------+
| ships   | 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
~~~~~

::

    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
