Momentum / vector movement

Cavalry at rest may move off at up to two dice; at top speed (four dice) they can only slow to two dice next turn. When intending to close to contact a cavalry unit must roll at least three dice regardless of distance, taking any DP penalties.

Cavalry: May only change speed by one or two dice in a turn (i.e., if a unit is at rest, it may only move off at up to two dice x inches

A unit at rest can move off at no more than two dice x inches; a unit at top speed (four dice) can only slow to two dice next turn. Any move intended to close to contact requires at least three dice regardless of distance, taking DP penalties for low rolls.

Cavalry: May only change speed by one or two dice in a turn (i.e., if a unit is at rest, it may only move off at up to two dice x inches

A ship starting from stop goes 1 knot the first 30 seconds, 2 knots the second, and so on; backing engines from 12 knots runs 10, 8, 6, 4, 2 knots. In the fleet game a signal to slow to half speed gives one move at three-quarters speed, then half speed; stopping takes one move at three-quarters and one at one-quarter. A ship turning on the circle loses speed (12 to 9 knots) and must regain it at the same rate.

A ship is allowed to gain or lose speed at the rate of 1 knot for each period of thirty seconds

A ship can increase or reduce its rate by no more than 2 squares per turn (e.g. 3 squares can become 1-5). Having no brakes, it must always move at least one square before it can heave-to.

A ship can increase or reduce its rate of sailing by no more than 2 squares in a turn.

A manoeuvre's speed number may differ by at most one from the previous turn's. Engine damage and fabric tears can forbid speed 3-4 manoeuvres; after spin recovery the aircraft must fly its maximum speed.

Players may only increase or decrease their aircraft’s speed by one speed number per turn.

A ship reversing engines stops dead in one complete move (a 15-knot ship on the fifth square), then goes astern 1, 2, 3 squares on following moves; from stopped it gathers way one square the first move, two the second; under way it can increase one square per move up to maximum.

A ship under way can increase its speed one square every move up to its maximum speed.