| | Country | Builder | Location | Ship | Class | Notes |
| 6 January | Germany | Reichsmarinewerft | Wilhelmshaven | Emden | Light cruiser | For Reichsmarine |
| 8 January | United Kingdom | Blyth Shipbuilding & Dry Docks Co. Ltd | Blyth | Hebburn | Cargo ship | For Huddart Parker Ltd.[1] |
| 12 January | Germany | Deutsche Werke | Kiel | Topeka | Cargo ship | For A/S Norge-Mexico Gulflinjen.[2] |
| 15 January | United Kingdom | Harland & Wolff | Belfast | Alynbank | Cargo ship | For Bank Line.[3] |
| 10 February | United Kingdom | Blyth Shipbuilding & Dry Docks Co. Ltd | Blyth | Thisbe | Cargo ship | For Sociètè Navale Caennaise.[4] |
| 12 February | United Kingdom | Harland & Wolff | Belfast | Elmbank | Cargo ship | For Bank Line.[5] |
| 23 February | Japan | Mitsubishi | Kobe | Ro-68 | Type L4 submarine | For Imperial Japanese Navy |
| 24 February | United Kingdom | Swan, Hunter & Wigham Richardson Ltd | Newcastle upon Tyne | Inanda | Cargo liner | For Charente Steamship Co Ltd |
| 25 February | United Kingdom | Harland & Wolff | Belfast | Inverlago | Tanker | For Lago Shipping Co.[6] |
| 13 March | United Kingdom | William Simons and Co. Ltd. | Renfrew | Patrick Stewart | Cable ship | renamed HMIS Investigator and converted into a survey ship for the Royal Indian Navy |
| 14 March | Germany | Deutsche Werke | Kiel | Schwarzenfels | Merchant ship | renamed Schwabenland and converted to a seaplane tender for Deutsche Luft Hansa's South Atlantic airmail in 1934 |
| 25 March | United Kingdom | Harland & Wolff | Belfast | Inverossa | Tanker | For Lago Shipping Co.[7] |
| 26 March | United Kingdom | Harland & Wolff | Govan | Rawalpindi | Passenger ship | For Peninsular and Oriental Steam Navigation Company. |
| 6 April | United Kingdom | Harland & Wolff | Belfast | Inverpool | Tanker | For British Mexican Petroleum Company.[8] |
| 7 April | United States | New York Shipbuilding | Camden, New Jersey | Saratoga | Lexington-class aircraft carrier | For United States Navy |
| 8 April | United Kingdom | Harland & Wolff | Belfast | Forresbank | Cargo ship | For Bank Line.[9] |
| 23 April | United Kingdom | Harland & Wolff | Belfast | Invercaibo | Tanker | For Lago Shipping Co.[10] |
| 24 April | United Kingdom | Harland & Wolff | Belfast | Hythe | Ferry | For Southern Railway.[11] |
| 8 May | Norway | Fredrikstad Mekaniske Verksted | Fredrikstad | Dronning Maud | Passenger ship | For Det Nordenfjeldske Dampskipsselskap |
| 8 May | United Kingdom | Harland & Wolff | Belfast | King James | Cargo ship | For King Line.[12] |
| 21 May | United Kingdom | Harland & Wolff | Belfast | Nairnbank | Cargo ship | For Bank Line.[13] |
| 22 May | United Kingdom | Harland & Wolff | Belfast | Haslemere | Ferry | For Southern Railway.[14] |
| 26 May | United Kingdom | Harland & Wolff | Belfast | Inverruba | Tanker | For Lago Shipping Co. |
| May | Germany | Seebeckwerft | Wesermünde | Weser | Fishing trawler | For Hochseefischerei Bremerhaven |
| 18 June | United Kingdom | Harland & Wolff | Belfast | Weirbank | Cargo ship | For Bank Line.[15] |
| 23 June | United Kingdom | Harland & Wolff | Belfast | Whitstable | Ferry | For Southern Railway.[16] |
| 7 July | United Kingdom | Harland & Wolff | Belfast | Asturias | Passenger ship | For Royal Mail Line.[17] |
| 7 July | United Kingdom | Harland & Wolff | Belfast | King Malcolm | Cargo ship | For King Line.[18] |
| 14 July | United Kingdom | Harland & Wolff | Belfast | Larchbank | Cargo ship | For Bank Line.[19] |
| 21 July | United Kingdom | Cammell Laird | Birkenhead | Sulaco | Reefer ship | For Fyffes Line |
| 5 August | Japan | Kure Naval Arsenal | Kure | I-53 (I-153) | Kaidai III-type submarine | For Imperial Japanese Navy |
| 6 August | United Kingdom | Harland & Wolff Ltd | Greenock | Rajputana | Ocean liner | For P&O.[20] |
| 18 August | United Kingdom | Harland & Wolff | Belfast | Fratton | Ferry | For Southern Railway.[21] |
| 26 August | Netherlands | P. Smit Jr. Shipbuilding and Machine Factory | Rotterdam | Jääkarhu | Icebreaker | For the Finnish Board of Navigation. |
| 1 September | Germany | Travewerk Gebroeders Goedhardt AG | Lübeck | Riga | Cargo ship | For Lübeck Linie AG |
| 1 September | United Kingdom | Harland & Wolff | Belfast | Temuco | Tender | For Peninsular & Oriental Steam Navigation Company.[23] |
| 2 September | United Kingdom | Harland & Wolff | Belfast | Gascony | Cargo ship | For David MacIver & Co.[24] |
| 2 September | Japan | Kure Naval Arsenal | Kure | I-55 (I-155) | Kaidai III-type submarine | For Imperial Japanese Navy |
| 3 September | United Kingdom | Armstrong Whitworth | Walker | Nelson | Nelson-class battleship | For Royal Navy |
| 18 September | Germany | Seebeckwerft | Wesermünde | Ferdinand Niedermeyer | Fishing trawler | For Grundmann & Gröschel |
| 24 September | United Kingdom | Harland & Wolff | Belfast | Levernbank | Cargo ship | For Bank Line.[25] |
| 25 September | Japan | Mitsubishi | Kobe | Ro-65 | Type L4 submarine | For Imperial Japanese Navy |
| 3 October | Japan | Yokosuka Naval Arsenal | Yokosuka | I-58 (I-158) | Kaidai III-type submarine | For Imperial Japanese Navy |
| 3 October | United States | Bethlehem Shipbuilding Fore River Shipyard | Quincy, Massachusetts | Lexington | Lexington-class aircraft carrier | For United States Navy |
| 28 October | United Kingdom | Harland & Wolff | Belfast | Madrid | Cargo ship | For Argentine Navigation Co.[26] |
| 29 October | United Kingdom | Harland & Wolff | Belfast | Myrtlebank | Cargo ship | For Bank Line.[27] |
| 14 November | Germany | Blohm & Voss | Hamburg | Hamburg | Ocean liner | For Hamburg America Line.[28] |
| 17 November | United Kingdom | Ailsa Shipbuilding Company | Troon | Scillonian | Ferry | For Isles of Scilly Steamship Company. |
| 25 November | Sweden | Kockums | Malmö | Childar | Merchant | For Weil & Amundsen Rederi A/S, Halden, Norway |
| 28 November | United Kingdom | Harland & Wolff | Belfast | Marthara | Cargo ship | For MacLay& MacIntyre Ltd.[30] |
| 30 November | United Kingdom | Amble Shipbuilding Co. Ltd. | Amble | Southgate | Tanker | For Anglo-American Oil Co. Ltd.[31] |
| 3 December | United Kingdom | Harland & Wolff | Belfast | Olivebank | Cargo ship | For Bank Line.[32] |
| 17 December | United Kingdom | Cammell Laird | Birkenhead | Rodney | Nelson-class battleship | For Royal Navy |
| 17 December | France | Brest Dock Yard | Brest | Duquesne | Duquesne-class cruiser | For French Navy |
| 19 December | United Kingdom | Harland & Wolff | Belfast | Colonial | Cargo ship | For T. & J. Harrison.[33] |
| 29 December | United Kingdom | Harland & Wolff | Belfast | Roma | Cargo ship | For Argentine Navigation Co.[34] |
| 31 December | United Kingdom | Cook, Welton & Gemmell | Beverley | William Scoresby | Research vessel | For the Crown Agents for the Colonies. |
| Unknown date | United Kingdom | Aldous Ltd. | Brightlingsea | Aidie | Thames barge | For R. & W. Paul Ltd.[36] |
| Unknown date | Germany | Gebrüder Schäfer | Völklingen | Anna Leonie | Towed riverboat | |
| Unknown date | United Kingdom | Aldous Ltd. | Brightlingsea | Barbara Jean | Thames barge | For R. & W. Paul Ltd.[37] |
| Unknown date | United Kingdom | Vickers-Armstrongs Ltd. | Barrow-in-Furness | Carinthia | Refrigerated cargo liner | For Cunard Line. |
| Unknown date | Germany | Reiherstieg Schiffswerfte & Maschinenfabrik AG | Hamburg | Grohm | Fishing trawler | For Deutsche Hochseefischerei Bremen-Cuxhaven AG |
| Unknown date | Germany | Deutsche Werft. | Hamburg | Las Palmas | Cargo ship | For Oldeburg Portuguese Line. |
| Unknown date | Germany | Atlas Werke | Bremen | Leander | Cargo ship | For Neptun Line AG |
| Unknown date | France | Société des Ateliers et Chantiers de la Loire | St. Nazaire | Pieter Corneliszoon Hooft | Ocean liner | For Stoomvaart Maatschappij Nederland, Amsterdam |
| Unknown date | United Kingdom | Workman, Clark and Company | Belfast | Antinous | Cargo ship | For New Egypt & Levant Shipping Co. Ltd. |
| Unknown date | United Kingdom | Abdela & Mitchell Ltd. | Brimscombe | Hubert | Tug | For F. A. Ashmead & Co. Ltd.[41] |
| Unknown date | United Kingdom | John Brown & Co. Ltd. | Glasgow | Lumen | Tanker | For H. E. Moss & Co. Ltd. |
| Unknown date | United Kingdom | | | Michael H. | Motor barge | For J. Harker Ltd. |
| Unknown date | United Kingdom | Cochrane & Son Ltd. | Selby | Nobleman | Tug | For United Towing Co. Ltd. |
| Unknown date | United Kingdom | Cochrane & Son Ltd. | Selby | Prizeman | Tug | For United Towing Co. Ltd. |
| Unknown date | United Kingdom | R. & W. Hawthorn, Leslie & Co. Ltd. | Newcastle upon Tyne | Ranchi | Ocean Liner | For Peninsular & Oriental Steam Navigation Company. |
| Unknown date | United Kingdom | R. & W. Hawthorn, Leslie & Co. Ltd. | Newcastle upon Tyne | Ranpura | Ocean Liner | For Peninsular & Oriental Steam Navigation Company. |
| Unknown date | Germany | Schiffs-und Dockbauwerft Flender | Lübeck | Reval | Cargo ship | For Lübeck Linie AG |
| Unknown date | Sweden | Kockums Mekaniska Verkstad | Malmö | Skåneland | Cargo ship | For Angfartyg AB Tirfing |
| Unknown date | Germany | AG Weser | Bremen | Sorrento | Cargo ship | For Robert M Sloman Jr |
| Unknown date | Germany | Norderwerft. | Hamburg | Wiedau | Cargo ship | For Budsier Reederei & Berugungs AG. |
| Unknown date | United States | Alabama Drydock and Shipbuilding Company | Mobile, Alabama | 4 unnamed vessels | barges | For private owners.[47] |