In the pre-radar time observation planes were providing an essential feedback to the Fire Control Officer. This was making the firing much more accurate over time.

The first step is to launch the airplane, click the “Ready” button, the preparation of the catapulting is taking several minutes.

It will take also a few minutes once the airplane is in the air to establish the connection with the firing unit.

When the airplane is actively spotting you will have a special icon indicating an active radio connection.

During the launch phase, it is important to avoid direction changes as it could damage the plane.

The Operational Status summarize the overall combat worthiness of the boat. It is a combination of the power plant effectiveness, the accumulated damages to the structures (including the gunnery). Successive damages, by gun hit, torpedoes or bomb, will diminish the Operational Status down. The status bar will go from green to orange and ultimately red. Be careful to manage your units to keep them afloat, when the Operational Status is down to 0 your boat is a worthless sinking wreck!

The Crew Status is a combination of the accumulated stress and fatigue. The Moral, Training and Experience of the crew will influence the wearing out of the Crew Status through the engagement. Hits and near misses will be the main contributors to the degradation of the Crew Status. A lower Crew Status will affect the overall efficiency of the crew (Gunnery, Repair Operation and launch / retrieve of observation planes).

The boat flooding is represented on a schematic overview. Penetrating impacts on the belt or underwater will flood the hull, this flooding is limited due to the division in watertight compartments.

The map in the upper left corner of the screen is centered on the unit.

It is zoomable and there is a scale on the left side. The boat previous course is the black line and the white mustache is seized according to the speed.

Each bar is 1 nm (nautic mile). There is a compass providing directions and north alignment. The longitude (Lng) and latitude (Lat) are provided in the degree / decimal format.

The Heading cursor is below the Port / Starboard boxes. As you are displacing the cursor you will see the Heading order updated. The Heading order will be the unit direction at the next turn. Heading actual is the current heading.

The second cursor allows you to control the power. The speed up or down will be delayed due to the inertia of the boat. Boat speed are in nautical knots (kn), one knot of speed is one nautical mile per hour. Based on the power setting the Fuel level will decrease over time.
Evasive steering is controlled by a switch. When on, the boat will have a zigzag course. This was done to throw off the enemy gunnery and was quite efficient above a certain speed (~15 kn).

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In this fictional scenario, the Graf Spee has been able to successfully evade the allied pursuit after the battle of Mar de Plate.

The British Admiralty only has 2 Tribal class Destroyers and the HMS Warspite available to intercept the Graf Spee on his way back to Germany. The Graf Spee has been sighted xx North and yy West on a 60 course running 15 knots.

You need to plot your route to intercept the Graf Spee before night fall.