diff --git a/lib/boatData/GwBoatData.cpp b/lib/boatData/GwBoatData.cpp
index 4be1450..39d22c8 100644
--- a/lib/boatData/GwBoatData.cpp
+++ b/lib/boatData/GwBoatData.cpp
@@ -48,12 +48,36 @@ GwBoatItemBase::GwBoatItemBase(String name, String format, GwBoatItemBase::TOTyp
     this->type = 0;
     this->lastUpdateSource = -1;
 }
-void GwBoatItemBase::setInvalidTime(unsigned long it, bool force){
-    if (toType != TOType::user || force ){
-        invalidTime=it;
+void GwBoatItemBase::setInvalidTime(GwConfigHandler *cfg){
+    if (toType != TOType::user){
+        unsigned long timeout=GwBoatItemBase::INVALID_TIME;
+        switch(getToType()){
+            case GwBoatItemBase::TOType::ais:
+                timeout=cfg->getInt(GwConfigDefinitions::timoAis);
+                break;
+            case GwBoatItemBase::TOType::def:
+                timeout=cfg->getInt(GwConfigDefinitions::timoDefault);
+                break;
+            case GwBoatItemBase::TOType::lng:
+                timeout=cfg->getInt(GwConfigDefinitions::timoLong);
+                break;
+            case GwBoatItemBase::TOType::sensor:
+                timeout=cfg->getInt(GwConfigDefinitions::timoSensor);
+                break;
+            case GwBoatItemBase::TOType::keep:
+                timeout=0;
+                break;
+        }
+        invalidTime=timeout;
     }
 }
 size_t GwBoatItemBase::getJsonSize() { return JSON_OBJECT_SIZE(10); }
+
+void GwBoatItemBase::GwBoatItemMap::add(const String &name,GwBoatItemBase *item){
+    boatData->setInvalidTime(item);
+    (*this)[name]=item;
+}
+
 #define STRING_SIZE 40
 GwBoatItemBase::StringWriter::StringWriter()
 {
@@ -127,7 +151,7 @@ GwBoatItem<T>::GwBoatItem(String name, String formatInfo, unsigned long invalidT
     this->type = GwBoatItemTypes::getType(dummy);
     if (map)
     {
-        (*map)[name] = this;
+        map->add(name,this);
     }
 }
 template <class T>
@@ -137,7 +161,7 @@ GwBoatItem<T>::GwBoatItem(String name, String formatInfo, GwBoatItemBase::TOType
     this->type = GwBoatItemTypes::getType(dummy);
     if (map)
     {
-        (*map)[name] = this;
+        map->add(name,this);
     }
 }
 
@@ -322,28 +346,12 @@ void GwBoatDataSatList::toJsonDoc(GwJsonDocument *doc, unsigned long minTime)
 GwBoatData::GwBoatData(GwLog *logger, GwConfigHandler *cfg)
 {
     this->logger = logger;
+    this->config = cfg;
+}
+void GwBoatData::begin(){
     for (auto &&it : values){
-        unsigned long timeout=GwBoatItemBase::INVALID_TIME;
-        switch(it.second->getToType()){
-            case GwBoatItemBase::TOType::ais:
-                timeout=cfg->getInt(GwConfigDefinitions::timoAis);
-                break;
-            case GwBoatItemBase::TOType::def:
-                timeout=cfg->getInt(GwConfigDefinitions::timoDefault);
-                break;
-            case GwBoatItemBase::TOType::lng:
-                timeout=cfg->getInt(GwConfigDefinitions::timoLong);
-                break;
-            case GwBoatItemBase::TOType::sensor:
-                timeout=cfg->getInt(GwConfigDefinitions::timoSensor);
-                break;
-            case GwBoatItemBase::TOType::keep:
-                timeout=0;
-                break;
-        }
-        it.second->setInvalidTime(timeout);
+        it.second->setInvalidTime(config);
     }
-
 }
 GwBoatData::~GwBoatData()
 {
@@ -456,6 +464,10 @@ double GwBoatData::getDoubleValue(String name, double defaultv)
         return defaultv;
     return it->second->getDoubleValue();
 }
+
+void GwBoatData::setInvalidTime(GwBoatItemBase *item){
+    if (config != nullptr) item->setInvalidTime(config);
+}
 double formatCourse(double cv)
 {
     double rt = cv * 180.0 / M_PI;
diff --git a/lib/boatData/GwBoatData.h b/lib/boatData/GwBoatData.h
index 18a5f08..a4df3b4 100644
--- a/lib/boatData/GwBoatData.h
+++ b/lib/boatData/GwBoatData.h
@@ -14,6 +14,8 @@
 #define ROT_WA_FACTOR 60
 
 class GwJsonDocument;
+class GwBoatData;
+
 class GwBoatItemBase{
     public:
         using TOType=enum{
@@ -56,7 +58,6 @@ class GwBoatItemBase{
         GWSC(formatRot);
         GWSC(formatDate);
         GWSC(formatTime);
-        typedef std::map<String,GwBoatItemBase*> GwBoatItemMap;
     protected:
         int type;
         unsigned long lastSet=0;
@@ -93,10 +94,15 @@ class GwBoatItemBase{
         virtual double getDoubleValue()=0;
         String getName(){return name;}
         const String & getFormat() const{return format;}
-        virtual void setInvalidTime(unsigned long it, bool force=true);
+        virtual void setInvalidTime(GwConfigHandler *cfg);
         TOType getToType(){return toType;}
+        class GwBoatItemMap : public std::map<String,GwBoatItemBase*>{
+            GwBoatData *boatData;
+            public:
+            GwBoatItemMap(GwBoatData *bd):boatData(bd){}
+            void add(const String &name,GwBoatItemBase *item);
+        };
 };
-class GwBoatData;
 template<class T> class GwBoatItem : public GwBoatItemBase{
     protected:
         T data;
@@ -186,8 +192,9 @@ public:
     clazz *name=new clazz(#name,GwBoatItemBase::fmt,toType,&values) ;
 class GwBoatData{
     private:
-        GwLog *logger;
-        GwBoatItemBase::GwBoatItemMap values;
+        GwLog *logger=nullptr;
+        GwConfigHandler *config=nullptr;
+        GwBoatItemBase::GwBoatItemMap values{this};
     public:
 
     GWBOATDATA(double,COG,formatCourse) // course over ground
@@ -231,9 +238,11 @@ class GwBoatData{
     public:
         GwBoatData(GwLog *logger, GwConfigHandler *cfg);
         ~GwBoatData();
+        void begin();
         template<class T> GwBoatItem<T> *getOrCreate(T initial,GwBoatItemNameProvider *provider);
         template<class T> bool update(T value,int source,GwBoatItemNameProvider *provider);
         template<class T> T getDataWithDefault(T defaultv, GwBoatItemNameProvider *provider);
+        void setInvalidTime(GwBoatItemBase *item);
         bool isValid(String name);
         double getDoubleValue(String name,double defaultv);
         GwBoatItemBase *getBase(String name);
diff --git a/src/main.cpp b/src/main.cpp
index 714c0a5..90e5691 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -784,6 +784,7 @@ void setup() {
     logger.prefix="FALLBACK:";
   logger.setWriter(new DefaultLogWriter());
 #endif
+  boatData.begin();
   userCodeHandler.startInitTasks(MIN_USER_TASK);
   channels.preinit();
   config.stopChanges();