Battle speed (ALFA) “TWO BLUE ONE, THIS IS GRID POSIT CHARLIE ONE ZERO. BATTLE SPEED. BATTLE SPEED. OVER.” Touchdown report (wave) (channel ALFA) " , THIS IS TWO BLUE ONE. TOUCHDOWN, TOUCHDOWN, TOUCHDOWN. OVER.” Touchdown reports (control group net) " , THIS IS . TWO BLUE ONE TOUCHDOWN. LATE ONE QUARTER. OVER.” Governing Notes The following governing notes are to be used when communicating to waves: , where appearing, indicates daily changing Call signs. The shift to channel ALFA can be ordered by PCS when desired, but no later than when boat waves cross the LOD. If no channel shift order is given, boat waves will automatically shift to channel ALFA upon crossing the LOD. Amphibious assault vehicle (AAV) waves require an intention statement from PCS when PCS takes positive control. A full call-up is required for all transmissions to ensure that the proper wave received the information. When ordering courses to boat waves, make sure they are given in magnetic degrees. All reports to the CCO should include a time status. Fractions of minutes are spoken one-quarter, one-half, three-quarters, and so forth. Because many boat compasses are unreliable, it is best to change the course of boats by vectors of 10 degrees to 30 degrees instead of course headings. To minimize the initial error and consequent loss of time, the BGC, ABGC, and all BWCs should check and compare their magnetic compass headings with the PCS while transmitting from the wave-forming circles to the landing craft rendezvous area. Vectors may be given at any time to maintain a wave's position in the boat lane center. However, vectors should be held to 10 degrees or less in the surf zone for boat safety. Waves outside the boat lanes must be vectored to regain boat lane positioning. Prior to the order for BS, speed changes may be given at any time to keep waves on time. Speed changes must be ordered when waves are early or late 2 minutes or more. BS must be ordered at the 1,000-yard mark. Even if a wave is doing maximum speed before the 1,000-yard mark, the order “BATTLE SPEED” is still mandatory at that time. Note that all information transmissions end in OUT and those directing waves to perform a duty end in OVER. If at any time you desire a wave to acknowledge receipt of information, end the transmission with OVER, thus requiring an answer. Dispatched orders are not required if waves have been shifted to channel ALFA or the shift to channel ALFA upon each wave’s crossing LOD is provided for in the OPORDER or prebrief. VISUAL PROCEDURES FOR TRANSMITTING GRID POSITIONS LEARNING OBJECTIVE: Explain procedures for visually transmitting grid positions. Grid positions by flashing light or Nancy will normally be preceded only by flashing the wave number. However, if confusion would result from transmitting into different numbered boat lanes or different colored beach lanes, it will be necessary to modify the call accordingly. For example, to call the wave commander of Wave Three, Blue Beach Two, the normal call-up is the numeral 3. If confusion would result, and it is therefore necessary to send the complete call, the call is transmitted as numeral 3, Blue, numeral 2. The control ship, after establishing communications with the wave commander, then transmits the grid position. The wave commander receipts for each group by flashing a T with his or her signal equipment and receipts for the message with the usual R. Visual grid positions and information are transmitted by control ships using the procedures in the following paragraphs. After the wave call-up, insert the group GP. This acts as a proword and alerts the receiver that a grid position is to follow. 12-21