13.7.1 Craft of 500 gross tonnage or upwards shall
be provided with a rate-of-turn indicator. A rate-of-turn indicator
shall be provided in craft of less than 500 gross tonnage if the test
according to annex 9 shows that the
turn rate can exceed safety level 1.
13.7.2 Craft shall be provided with an indicator
showing the rudder angle. In craft without a rudder, the indicator
shall show the direction of steering thrust.