Will Hay plays a bragging sea captain whose maritime experience actually extends to navigating a coal barge down inland waterways. His tall tales catch him out when he is co-erced into commanding an unseaworthy ship by an unscrupulous shipping agent who means to have it wrecked. This was the first film to couple Will Hay with both Moore Marriott and Graham Moffatt.
| Actor | Role |
|---|---|
 Will HayCaptain Ben Cutlet | Captain Ben Cutlet |
 Moore MarriottJeremiah Harbottle | Jeremiah Harbottle |
 Graham MoffattAlbert | Albert |
 Norma VardenOlivia Potter-Porter | Olivia Potter-Porter |
| KKenneth WarringtonYates | Yates |
 Dennis WyndhamMaryatt | Maryatt |
 Amy VenessEmma Harbottle | Emma Harbottle |
 Peter GawthorneBit Role (uncredited) | Bit Role (uncredited) |
 George MerrittOfficer on Yacht | Officer on Yacht |
| CCharles RolfeSecond Detective | Second Detective |
| LLeonard SharpCrew Member | Crew Member |
 Harry TerryCrew Member | Crew Member |
| PPercy WalshCaptain of the 'Rob Roy' | Captain of the 'Rob Roy' |