| 'Sinker' |
| WWII sub |
| Sub _____ |
| Submarine |
| WWI craft |
| War vessel |
| WWII craft |
| Sub of old |
| WWI danger |
| WWII peril |
| WWI vessel |
| WWI menace |
| Pack member |
| WWII vessel |
| Axis vessel |
| Sea prowler |
| W.W. II sub |
| WWII sinker |
| WWII target |
| Sub in WWII |
| Wartime sub |
| Ship sinker |
| WWII threat |
| WWII menace |
| German sub? |
| WWII vehicle |
| About (anag) |
| Ocean raider |
| Sea marauder |
| WWI predator |
| German diver |
| Liner sinker |
| German craft |
| W.W. I menace |
| W.W. II craft |
| Das Boot" sub |
| German lurker |
| German threat |
| Sub of a sort |
| World war sub |
| Axis predator |
| Convoy raider |
| Dangerous sub |
| German raider |
| German menace |
| WWII attacker |
| WWII predator |
| Convoy chaser |
| Marine menace |
| W.W. II menace |
| W.W. II vessel |
| Athenia sinker |
| Axis submarine |
| Hamburger sub? |
| Wolf pack ship |
| WWII enemy sub |
| W.W. II danger |
| Untersee craft |
| WWII submarine |
| Das Boot," e.g. |
| Das Boot" craft |
| Corvette's prey |
| Destroyer's foe |
| German WWII sub |
| Q-ship's quarry |
| Sinker of sorts |
| Wolf pack craft |
| WWII sea menace |
| WWII sea threat |
| Wolfpack member |
| WWII German sub |
| Wolf pack member |
| Destroyer downer |
| Destroyer hunter |
| Destroyer sinker |
| WWII naval craft |
| Tin can's target |
| Torpedo launcher |
| W.W. II predator |
| World War II sub |
| WWII ship sinker |
| Lusitania undoer |
| Das Boot" vessel |
| Undersea prowler |
| German submarine |
| Lusitania sinker |
| Underwater vessel |
| Bygone German sub |
| Destructive craft |
| Doenitz's concern |
| Former German sub |
| Sub you can't eat |
| Underwater threat |
| WWII naval menace |
| WWII naval threat |
| WWII sea attacker |
| Corvette's target |
| German WWII craft |
| German war vessel |
| Das Boot" setting |
| Dangerous WWII sub |
| German sea denizen |
| German WWII threat |
| Liner threat, once |
| Lusitania's sinker |
| Ocean menace, once |
| One of a wolf pack |
| Periscope's source |
| Unterwasser vessel |
| W.W. II German sub |
| W.W. II sea menace |
| Wartime sea menace |
| WWII German threat |
| WWII convoy raider |
| German sea scourge |
| Lusitania's undoer |
| Destroyer destroyer |
| Avoider of charges? |
| German naval weapon |
| Lurking WWII vessel |
| Naval convoy menace |
| Stealthy WWII craft |
| Submarine of W.W. I |
| W.W. II ship sinker |
| World War I menace. |
| World War II vessel |
| Depth-charge target |
| Part of a wolf pack |
| German military sub |
| Lusitania's undoing |
| Kriegsmarine vessel |
| German sub of W.W. I |
| Lusitania's attacker |
| Marine menace of WW2 |
| Old torpedo launcher |
| Part of a WWII fleet |
| Sub with sauerkraut? |
| Undersea WWII threat |
| Vessel in a wolfpack |
| WWII maritime menace |
| WWII blockade vessel |
| ''Das Boot,'' for one |
| Atlantic convoy's foe |
| Dangerous sub of WWII |
| Destroyer's destroyer |
| German sub of W.W. II |
| German WWII submarine |
| Marine menace of WWII |
| W.W. II German vessel |
| WW II shipping threat |
| Convoy menace of WWII |
| Lusitania's destroyer |
| Member of a wolf pack |
| One of Tirpitz's pack |
| Subsurface war vessel |
| WWII torpedo launcher |
| Former maritime menace |
| Seagoing wolfpack unit |
| The Lusitania's undoer |
| Tirpitz's menace: 1915 |
| Weaponized sub of WWII |
| WWII maritime marauder |
| Erstwhile marine menace |
| R.N. nemesis in W.W. II |
| W.W. II Atlantic lurker |
| German submarine: Hyph. |
| WWII military transport |
| The Enemy Below" threat |
| Maritime threat of WWII |
| Sinker of the Lusitania |
| Certain torpedo launcher |
| Naval vessel during WWII |
| One of Tirpitz's vessels |
| One of Tirpitz's menaces |
| The Deutschland of 1916. |
| Wolf pack member of WWII |
| World War I naval threat |
| WWII Enigma machine user |
| The Enemy Below" attacker |
| Shipper's worry in W.W. I |
| W.W. II blockade enforcer |
| Concern for an Allied ship |
| Depth-charge target of old |
| One in a seagoing wolfpack |
| One in search of a tin can |
| Sub that sank Allied ships |
| Threat to a WWII destroyer |
| Vessel in "The Enemy Below |
| Vessel in the Kriegsmarine |
| It tried to avoid charges? |
| Depth-charge target of WWII |
| Submersible warship of WWII |
| Former Atlantic ocean threat |
| Depth-charge avoider of WWII |
| Member of the Kaiser's fleet |
| WWII German submarine: Hyph. |
| Battle of the Atlantic craft |
| One trying to avoid charges? |
| It may give a sinking feeling |
| Member of a W.W. I "wolf pack |
| Member of a W.W. II wolf pack |
| Battle of the Atlantic vessel |
| Erstwhile German marine menace |
| Part of Germany's World War fleet |
| Maritime threat of the early 1940s |
| Battle of the Atlantic participant |
| Vessel that's short for Unterseeboot |
| Vessel under Tirpitz's command: 1915 |
| Its first letter stands for "untersee |
| German submarine of World War II: Hyph. |
| Menace in the 1957 film "The Enemy Below |
| Raider in the battle of the St. Lawrence |
| Vessel included in the so-called "Plan Z |
| Vessel scuttled during Operation Deadlight |