| Name | Shipbuilder | Build Location |
|---|---|---|
| SS Wonga Wonga | Unknown | Unknown |
| SS Woronga | Unknown | Unknown |
| Wynunga | Unknown | Unknown |
| SS Yarra | Unknown | Unknown |
| Yawata Maru | Unknown | Unknown |
| Yeoffney | Unknown | Unknown |
| Yongale | Unknown | Unknown |
| Yorkshire (Money Wigram's) | Unknown | Unknown |
| Zealandia | Unknown | Unknown |
| Zebra | Unknown | Unknown |
| SS Zeida | Unknown | Unknown |
| GMS Zieten | Unknown | Unknown |
| Zieten | Unknown | Unknown |
| Zolo | Unknown | Unknown |
| Zsarbrook | Unknown | Unknown |