| Issue | #12 |
| Published | Winter 1943-44 |
| Frequency | Quarterly |
| Cover Price | 0.10 |
| Pages | 60 |
| Editing | Vince Fago |
| Notes | The Statement of Ownership lists Jean Goodman as Editor. |
| Characters | The Sub-Mariner [Prince Namor]; the Angel [Tom Hallaway]; the Nazis (villains) |
| Genre | superhero |
| Pencils | Alex Schomburg |
| Inks | Alex Schomburg |
| Letters | typeset |
| Reprinted | in Marvel Masterworks: Golden Age Sub-Mariner (Marvel, 2005 series) #3 (2009) |
| Characters | The Sub-Mariner [Prince Namor]; The Diving Marvels [the Engels sisters]; Carl Wildmer (villain, introduction, death); the Japanese (villains, many deaths) |
| Synopsis | Namor challenges a champion swimmer to a contest and wins, unaware, until later, that the man also serves the enemy, who makes attacks on American shipping. |
| Genre | superhero |
| Pencils | Al Gabriele |
| Inks | Carl Pfeufer |
| Reprinted | in Marvel Masterworks: Golden Age Sub-Mariner (Marvel, 2005 series) #3 (2009) |
| Characters | The Sub-Mariner [Prince Namor]; The Japanese (villains) |
| Synopsis | Namor seeks to discover the secret location of a Japanese submarine base that has been responsible for destroying Allied merchant shipping, but is shocked to learn that a prehistoric monster is involved! |
| Genre | superhero |
| Pencils | Carl Pfeufer |
| Inks | Carl Pfeufer |
| Reprinted | in Marvel Masterworks: Golden Age Sub-Mariner (Marvel, 2005 series) #3 (2009) |
| Characters | Captain America [Steve Rogers]; Bucky [Bucky Barnes] |
| Synopsis | Illustrated PSA in which Cap asks kids to get involved in the waste paper drive, while Bucky displays four ways to save the paper for easy handling. |
| Genre | Superhero |
| Notes | Sequence added by Craig Delich 2010-3-11. |
| Reprinted | in Marvel Masterworks: Golden Age Sub-Mariner (Marvel, 2005 series) #3 (2009) |
| Characters | The Sub-Mariner [Prince Namor]; Guest Star: Betty Dean; Captain Stark; Marshal Ito (villain, introduction, death); Dr. Soku (villain, introduction, death); the Japanese (villains) |
| Synopsis | Sub-Mariner speeds to China to assist Betty Dean in her quest to evacuate Chinese orphans from the missions in China. |
| Genre | superhero |
| Pencils | Al Gabriele |
| Inks | John Jordan ? |
| Notes | Inker revision from Al Bellman to John Jordan? by Craig Delich 2010-3-11. The Who's Who doesn't list Bellman with ever inking this strip. |
| Reprinted | in Marvel Masterworks: Golden Age Sub-Mariner (Marvel, 2005 series) #3 (2009) |
| Characters | Hank Crawford (Deputy Sheriff); Dave Williams (Policeman); un-named German (villain, death) |
| Synopsis | City cop Dave Williams, tracking down a German killer in an old west ghost town, is taught a lesson or two by an old-time, un-trained Deputy Sheriff! |
| Genre | crime |
| Letters | ?; typeset (most) |
| Notes | Part of page two features the Statement of Ownership, which lists the publisher as Manvis Publications, Inc., the Editor as Jean Goodman, and the Managing Editor/Business Editor as Martin Goodman. |
| Reprinted | in Marvel Masterworks: Golden Age Sub-Mariner (Marvel, 2005 series) #3 (2009) |
| Characters | The Angel [Tom Hallaway]; Mrs. Van Nest; Tom Malone (villain, introduction, death); Pete Malone (villain, introduction, death); Pat Malone (villain, introduction, Pete Malone's sister, death), Danny Malone (villain, introduction, Tom Malone's son, reforms) |
| Synopsis | The death of a notorious gangster Tom Malone deeply affects the remaining family members, who all swear revenge upon the person they deem responsible: The Angel! |
| Genre | superhero |
| Pencils | Gustav Schrotter |
| Inks | Gustav Schrotter |
| Reprinted | in Marvel Masterworks: Golden Age Sub-Mariner (Marvel, 2005 series) #3 (2009) |