diff --git a/debian/changelog b/debian/changelog
new file mode 100644
index 0000000..8f38009
--- /dev/null
+++ b/debian/changelog
@@ -0,0 +1,5 @@
+yms (0.2.1-1) unstable; urgency=medium
+
+  * Initial Debian packaging.
+
+ -- Thomas Hooge <thomas@hoogi.de>  Fri, 28 Aug 2026 11:30:00 +0200
diff --git a/debian/config b/debian/config
new file mode 100755
index 0000000..9e6b70d
--- /dev/null
+++ b/debian/config
@@ -0,0 +1,10 @@
+#!/bin/sh
+set -e
+
+. /usr/share/debconf/confmodule
+
+db_input high yms/db-name || true
+db_input high yms/db-user || true
+db_input high yms/db-password || true
+
+db_go
diff --git a/debian/control b/debian/control
new file mode 100644
index 0000000..be1ab09
--- /dev/null
+++ b/debian/control
@@ -0,0 +1,22 @@
+Source: yms
+Section: misc
+Priority: optional
+Maintainer: Thomas Hooge <thomas@hoogi.de>
+Build-Depends:
+ debhelper-compat (= 13),
+ gettext
+Standards-Version: 4.7.2
+Rules-Requires-Root: no
+
+Package: yms
+Architecture: all
+Depends:
+ mariadb-server,
+ python3,
+ python3-gi,
+ gir1.2-gtk-3.0,
+ gir1.2-rsvg-2.0,
+ python3-mysqldb,
+ python3-bcrypt
+Description: Yacht Management Software
+ Yacht management software with native GTK GUI and web interface.
diff --git a/debian/docs b/debian/docs
new file mode 100644
index 0000000..ff37da8
--- /dev/null
+++ b/debian/docs
@@ -0,0 +1,2 @@
+README
+INSTALL
diff --git a/debian/install b/debian/install
new file mode 100644
index 0000000..d756264
--- /dev/null
+++ b/debian/install
@@ -0,0 +1,28 @@
+# Database
+db/*.sql usr/share/yms/db/
+
+# Native GUI
+ymsgui.py usr/lib/yms/
+yms/*.py usr/lib/yms/yms/
+
+# GTK UI
+yms/ui/* usr/share/yms/ui/
+
+# Web-GUI
+webgui/*.php usr/share/yms/webgui/
+webgui/globals.inc usr/share/yms/webgui/
+webgui/lib/*.inc usr/share/yms/webgui/lib/
+webgui/css/* usr/share/yms/webgui/css/
+webgui/js/* usr/share/yms/webgui/js/
+webgui/img/* usr/share/yms/webgui/img/
+webgui/locale/de_DE/LC_MESSAGES/yms.mo usr/share/yms/webgui/locale/de_DE/LC_MESSAGES/
+webgui/sailboat.svg usr/share/yms/webgui/
+
+# Shared static data
+shapes/* usr/share/yms/shapes/
+
+# Desktop entry
+yms.desktop usr/share/applications/
+
+# Idesktop link file
+yms.lnk usr/share/yms/
diff --git a/debian/manpages b/debian/manpages
new file mode 100644
index 0000000..4b30111
--- /dev/null
+++ b/debian/manpages
@@ -0,0 +1 @@
+yms.1
diff --git a/debian/postinst b/debian/postinst
new file mode 100755
index 0000000..42f74ce
--- /dev/null
+++ b/debian/postinst
@@ -0,0 +1,30 @@
+#!/bin/sh
+set -e
+
+. /usr/share/debconf/confmodule
+
+db_get yms/db-name
+DB_NAME="$RET"
+
+db_get yms/db-user
+DB_USER="$RET"
+
+db_get yms/db-password
+DB_PASSWORD="$RET"
+
+echo "Configuring YMS..."
+echo "Checking MariaDB database '${DB_NAME}'..."
+
+if mariadb -N -B -e "SELECT SCHEMA_NAME FROM INFORMATION_SCHEMA.SCHEMATA WHERE SCHEMA_NAME = '${DB_NAME}'" | grep -Fxq "${DB_NAME}"; then
+    echo "Database '${DB_NAME}' already exists."
+else
+    echo "Database '${DB_NAME}' does not exist."
+    echo "Creating database '${DB_NAME}'..."
+    mariadb -e "CREATE DATABASE \`${DB_NAME}\`"
+    echo "Database '${DB_NAME}' created."
+    echo "Initializing database schema..."
+    mariadb "${DB_NAME}" < /usr/share/yms/db/mariadb.sql
+    mariadb "${DB_NAME}" < /usr/share/yms/db/minimal.sql
+    echo "Database schema initialized."
+fi
+exit 0
diff --git a/debian/rules b/debian/rules
new file mode 100755
index 0000000..b5292f4
--- /dev/null
+++ b/debian/rules
@@ -0,0 +1,24 @@
+#!/usr/bin/make -f
+
+# Standard Debian build
+%:
+	dh $@
+
+# No build via Makefile
+override_dh_auto_build:
+
+# Generate translation and install generated files
+override_dh_install:
+	mkdir -p debian/yms/usr/share/locale/de/LC_MESSAGES
+	msgfmt locale/de.po -o debian/yms/usr/share/locale/de/LC_MESSAGES/ymsgui.mo
+	install -D -m 0644 icons/yms.svg debian/yms/usr/share/icons/hicolor/scalable/apps/yms.svg
+	install -D -m 0644 icons/yms48.png debian/yms/usr/share/icons/hicolor/48x48/apps/yms.png
+	install -D -m 0644 icons/yms64.png debian/yms/usr/share/icons/hicolor/64x64/apps/yms.png
+	install -D -m 0755 debian/yms-launcher debian/yms/usr/bin/yms
+	dh_install
+
+# Installation is handled by debian/install
+override_dh_auto_install:
+
+override_dh_installdebconf:
+	dh_installdebconf
diff --git a/debian/source/format b/debian/source/format
new file mode 100644
index 0000000..163aaf8
--- /dev/null
+++ b/debian/source/format
@@ -0,0 +1 @@
+3.0 (quilt)
diff --git a/debian/templates b/debian/templates
new file mode 100644
index 0000000..ec464aa
--- /dev/null
+++ b/debian/templates
@@ -0,0 +1,16 @@
+Template: yms/db-name
+Type: string
+Default: yms
+Description: Database name:
+ Please enter the name of the MariaDB database used by YMS.
+
+Template: yms/db-user
+Type: string
+Default: ymsweb
+Description: Web GUI database user:
+ Please enter the MariaDB user used by the YMS web interface.
+
+Template: yms/db-password
+Type: password
+Description: Web GUI database password:
+ Please enter the password for the YMS web interface database user.
diff --git a/debian/yms-launcher b/debian/yms-launcher
new file mode 100755
index 0000000..a233137
--- /dev/null
+++ b/debian/yms-launcher
@@ -0,0 +1,2 @@
+#!/bin/sh
+exec /usr/bin/python3 /usr/lib/yms/ymsgui.py "$@"