diff --git a/src/iwc.rs b/src/iwc.rs
new file mode 100644
index 0000000..ac906b1
--- /dev/null
+++ b/src/iwc.rs
@@ -0,0 +1,31 @@
+// SPDX-FileCopyrightText: 2024 Joshua Goins <josh@redstrate.com>
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+use std::io::Cursor;
+
+use crate::ByteSpan;
+use binrw::binrw;
+use binrw::BinRead;
+
+#[binrw]
+#[derive(Debug)]
+#[brw(little)]
+struct IwcHeader {
+    count: u16,
+    part_mask: u16
+}
+
+#[derive(Debug)]
+pub struct Iwc {
+
+}
+
+impl Iwc {
+    /// Reads an existing ULD file
+    pub fn from_existing(buffer: ByteSpan) -> Option<Self> {
+        let mut cursor = Cursor::new(buffer);
+        let header = IwcHeader::read(&mut cursor).ok()?;
+
+        Some(Iwc{})
+    }
+}
diff --git a/src/lib.rs b/src/lib.rs
index 8984bab..6115b67 100755
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -138,3 +138,6 @@ pub mod scd;
 
 /// Reading HWC files
 pub mod hwc;
+
+/// Reading IWC files
+pub mod iwc;