diff --git a/src/Array/HydrophoneDataBlock.java b/src/Array/HydrophoneDataBlock.java
index 558aa372..43ec7fb3 100644
--- a/src/Array/HydrophoneDataBlock.java
+++ b/src/Array/HydrophoneDataBlock.java
@@ -53,7 +53,7 @@ public class HydrophoneDataBlock extends PamDataBlock<HydrophoneDataUnit> {
 	 */
 	@Override
 	public int getNumRequiredBeforeLoadTime() {
-		return ArrayManager.getArrayManager().getCurrentArray().getHydrophoneCount();
+		return ArrayManager.getArrayManager().getCurrentArray().getHydrophoneCount()*2;
 	}
 
 
diff --git a/src/Array/HydrophoneProcess.java b/src/Array/HydrophoneProcess.java
index 1ac1a7c4..6c5c9f68 100644
--- a/src/Array/HydrophoneProcess.java
+++ b/src/Array/HydrophoneProcess.java
@@ -3,6 +3,7 @@ package Array;
 import pamScrollSystem.AbstractScrollManager;
 import PamUtils.PamCalendar;
 import PamView.symbol.StandardSymbolManager;
+import PamguardMVC.PamConstants;
 import PamguardMVC.PamDataBlock;
 import PamguardMVC.PamProcess;
 
@@ -42,7 +43,7 @@ public class HydrophoneProcess extends PamProcess{
 		
 		@Override
 		public void addOutputDataBlock(PamDataBlock outputDataBlock){
-			AbstractScrollManager.getScrollManager().addToSpecialDatablock(outputDataBlock);
+			AbstractScrollManager.getScrollManager().addToSpecialDatablock(outputDataBlock, 60000, 0);
 			super.addOutputDataBlock(outputDataBlock);
 		}