ship movmeent

[The Choinski Family]

As a rough thumbnail, from my Runequest books (converted to P&P terms)

An average full-day's coastal sailing (i.e. plotting a course that follows
the coastline, a normal path for 90% of the ship traffic in this era of
navigation) is considered to be one strategic turn, with the ship dropping
anchor at nightfall.  Once you are one hex or more away from any land, a
full day allows two strategic turns of sailing.

To determine sailing distance (in hexes) in a day, Use the numbers below for
windspeed vs. type of ship and multiplied by the number of strategic turns
of travel:
                   Poor Winds      Average Winds     Strong Winds
    MERCHANT          1/2               1                 2
    WARSHIP            1                3                 5

For ships that are rowed, the following speeds are per strategic turn of
travel.  On the open ocean, a replacement rowing crew is required or only
one strategic turn of movement per day is allowed.

                   Cruise
    BARGE            1/2
    MERCHANT          1
    WARSHIP           4

NOTE: Barges are generally not seaworthy and only used in harbors or lakes.
    -- Burton