diff --git a/dependency-reduced-pom.xml b/dependency-reduced-pom.xml
index 58a5bead..ceb2311d 100644
--- a/dependency-reduced-pom.xml
+++ b/dependency-reduced-pom.xml
@@ -4,7 +4,7 @@
   <groupId>org.pamguard</groupId>
   <artifactId>Pamguard</artifactId>
   <name>Pamguard</name>
-  <version>2.02.11a</version>
+  <version>2.02.11b</version>
   <description>Pamguard using Maven to control dependencies</description>
   <url>www.pamguard.org</url>
   <organization>
diff --git a/pom.xml b/pom.xml
index 250e023d..a26861ce 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <modelVersion>4.0.0</modelVersion>
   <groupId>org.pamguard</groupId>
   <artifactId>Pamguard</artifactId>
-  <version>2.02.11a</version>
+  <version>2.02.11b</version>
   <name>Pamguard</name>
   <description>Pamguard using Maven to control dependencies</description>
 	<url>www.pamguard.org</url>
@@ -22,7 +22,6 @@
    </properties>
 
    <build>
-	  
 	   <!-- Define where the source and test directories are -->
 	    <sourceDirectory>${basedir}/src</sourceDirectory>
 	    <testSourceDirectory>${basedir}/src/test</testSourceDirectory> <!-- where the Unit tets are located -->
@@ -772,9 +771,12 @@
 	</dependency>
 	 -->
 
-	<!-- not in Maven repository  
-you may need to copy files from your downloaded PAMGuard source code, e.g. C:\Users\*yourreposfolder*\source\repos\PAMGuardPAMGuard\repo\pamguard\org\x3\2.2.2 to 
-C:\Users\*yourusername*\.m2\repository\pamguard\org\x3\2.2.2-->
+	<!-- 
+	X3 library for decompressing sud files. Not in Maven repository  
+	you may need to copy files from your downloaded PAMGuard source code, 
+	e.g. C:\Users\*yourreposfolder*\source\repos\PAMGuardPAMGuard\repo\pamguard\org\x3\2.2.2 to 
+	C:\Users\*yourusername*\.m2\repository\pamguard\org\x3\2.2.2
+	-->
  	<dependency>
 	    <groupId>pamguard.org</groupId>
 	    <artifactId>x3</artifactId>
diff --git a/src/PamController/PamguardVersionInfo.java b/src/PamController/PamguardVersionInfo.java
index 819ec4e4..d46e0d2a 100644
--- a/src/PamController/PamguardVersionInfo.java
+++ b/src/PamController/PamguardVersionInfo.java
@@ -31,7 +31,7 @@ public class PamguardVersionInfo {
 	 * Version number, major version.minorversion.sub-release.
 	 * Note: can't go higher than sub-release 'f'
 	 */
-	static public final String version = "2.02.11";
+	static public final String version = "2.02.11b";
 	
 	/**
 	 * Release date
diff --git a/src/group3dlocaliser/offline/Group3DOfflineTask.java b/src/group3dlocaliser/offline/Group3DOfflineTask.java
index 000f022f..71b5efa9 100644
--- a/src/group3dlocaliser/offline/Group3DOfflineTask.java
+++ b/src/group3dlocaliser/offline/Group3DOfflineTask.java
@@ -2,6 +2,7 @@ package group3dlocaliser.offline;
 
 import java.util.ArrayList;
 
+import Array.ArrayManager;
 import PamController.PamController;
 import PamguardMVC.PamDataBlock;
 import PamguardMVC.PamDataUnit;
@@ -30,6 +31,7 @@ public class Group3DOfflineTask extends OfflineTask<PamDataUnit>{
 		if (parentData != null) {
 			this.addRequiredDataBlock(parentData);
 		}
+		this.addRequiredDataBlock(ArrayManager.getArrayManager().getHydrophoneDataBlock());
 	}
 
 	@Override