diff --git a/CreatingReliableSoftwareCpp/Presentation/exercises/builder/main.cpp b/CreatingReliableSoftwareCpp/Presentation/exercises/builder/main.cpp
index 2609baf..b5a4c60 100644
--- a/CreatingReliableSoftwareCpp/Presentation/exercises/builder/main.cpp
+++ b/CreatingReliableSoftwareCpp/Presentation/exercises/builder/main.cpp
@@ -25,12 +25,12 @@ int main() {
     auto ship = ShipBuilder()
                     .setTime(&time)
                     .setName("Black Widow")
-                    .setCapacity(1000)
-                    .setCrew(40)
+                    .setCapacity(2000)
+                    .setCrew(20)
                     .setStrategy(std::make_unique<ShipHardDifficultLvlStrategy>())
                     .setVisitor(std::make_unique<PrettyPrintVisitor>())
-                    .setArmor(100)
-                    .setDurability(1000)
+                    .setArmor(1500)
+                    .setDurability(1500)
                     .build();
     ship->load(std::make_unique<Alcohol>(300));
     ship->load(std::make_unique<Fruit>(200));
@@ -39,7 +39,7 @@ int main() {
 
     Enemy enemy("Enemy1",
                 ShipJsonBuilder("../ships.json").buildGaleon(&time, "Queens Anne revenge"),
-                std::make_unique<EnemyHardDifficultLvlStrategy>(),
+                std::make_unique<EnemyEasyDifficultLvlStrategy>(),
                 CargoDamageVisitor{});
 
     BattleField battefield{&user, &enemy};
diff --git a/CreatingReliableSoftwareCpp/Presentation/exercises/builder/src/Ship/include/Ship/CargoBuilder.h b/CreatingReliableSoftwareCpp/Presentation/exercises/builder/src/Ship/include/Ship/CargoBuilder.h
new file mode 100644
index 0000000..1990aee
--- /dev/null
+++ b/CreatingReliableSoftwareCpp/Presentation/exercises/builder/src/Ship/include/Ship/CargoBuilder.h
@@ -0,0 +1,18 @@
+#pragma once
+
+#include <Ship/Cargo.h>
+
+#include <memory>
+
+class CargoBuilder {
+public:
+    CargoBuilder();
+
+    [[nodiscard]] std::unique_ptr<Cargo> build();
+
+    CargoBuilder& setName(const std::string& name);
+    CargoBuilder& setAmount(int amount);
+
+private:
+    std::unique_ptr<Cargo> _cargo;
+};
diff --git a/CreatingReliableSoftwareCpp/Presentation/exercises/builder/src/Ship/src/CargoBuilder.cpp b/CreatingReliableSoftwareCpp/Presentation/exercises/builder/src/Ship/src/CargoBuilder.cpp
new file mode 100644
index 0000000..1ff3ffc
--- /dev/null
+++ b/CreatingReliableSoftwareCpp/Presentation/exercises/builder/src/Ship/src/CargoBuilder.cpp
@@ -0,0 +1,33 @@
+#include "Ship/CargoBuilder.h"
+
+#include <Core/PrettyPrintVisitor.h>
+#include <iostream>
+
+CargoBuilder::CargoBuilder()
+    : _cargo(std::make_unique<Cargo>()) {
+}
+
+std::unique_ptr<Cargo> CargoBuilder::build() {
+    if (!_cargo) {
+        std::cout << "Builder may be use once\n";
+        return nullptr;
+    }
+
+    // Check mandatory fields
+    if (_cargo->_name.empty() || _cargo->_amount == -1) {
+        std::cout << "Mandatory fields are not set!\n";
+        return nullptr;
+    }
+
+    _cargo->initialize();
+    return std::move(_cargo);
+}
+
+CargoBuilder& CargoBuilder::setName(const std::string& name) {
+    _cargo->_name = name;
+    return *this;
+}
+CargoBuilder& CargoBuilder::setamount(int amount) {
+    _cargo->_amount = amount;
+    return *this;
+}