diff --git a/src/cam.c b/src/cam.c
index d1b087d..023813d 100644
--- a/src/cam.c
+++ b/src/cam.c
@@ -169,6 +169,22 @@ static int mk_cam(facilities_t* facilities, uint8_t *cam_oer, uint32_t *cam_len)
 
         ++lightship->pos_history_len;
 
+        // Acceleration
+        if (lightship->pos_history_len > 1) {
+            double delta_angle = (lightship->pos_history[0]->heading - lightship->pos_history[1]->heading) / 10.0; /* 1º */
+            double delta_speed = (lightship->pos_history[0]->speed - (lightship->pos_history[1]->speed * cos(delta_angle * M_PI/180))) / 10.0; /* 0.1 m/s */
+            int16_t long_a =  (int16_t) (delta_speed / (double) ((lightship->pos_history[0]->ts - lightship->pos_history[1]->ts) / 1000)); /* 0.1 m/s^2 */
+
+            if (long_a > 160) long_a = 160;
+            else if (long_a < -160) long_a = -160;
+
+            bvc_hf->longitudinalAcceleration.longitudinalAccelerationValue = long_a;
+            bvc_hf->longitudinalAcceleration.longitudinalAccelerationConfidence = AccelerationConfidence_unavailable;
+        } else {
+            bvc_hf->longitudinalAcceleration.longitudinalAccelerationValue = LongitudinalAccelerationValue_unavailable;
+            bvc_hf->longitudinalAcceleration.longitudinalAccelerationConfidence = AccelerationConfidence_unavailable;
+        }
+
         // Low frequency container
         if (now > lightship->last_cam_lfc + 500) {