38:
514:
669:
507:
679:
500:
483:
689:
684:
371:
367:
478:. German Warships 1815–1945. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press.
646:
316:
72:
633:
111:
226:
17:
627:
583:
576:
562:
555:
548:
541:
534:
523:
359:
674:
479:
264:
50 nmi (93 km; 58 mi) at 4.5 knots (8.3 km/h; 5.2 mph) submerged
212:
663:
445:
306:
258:
202:
153:
43:
293:
261:(19,000 km; 12,000 mi) at 8 knots (15 km/h; 9.2 mph) surfaced
363:
239:
208:
2 Ă— diesel generators for surface dash, 890 brake horsepower (660 kW) total
355:
450:
German and
Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net
604:
597:
590:
569:
309:
128:
492:
300:
199:
124:
496:
147:
474:Gröner, Erich; Jung, Dieter; Maass, Martin (1991).
245:
9.1 knots (16.9 km/h; 10.5 mph) submerged
170:4.85 m (15 ft 11 in) pressure hull
508:
8:
395:"SM" stands for "Seiner Majestät" (English:
515:
501:
493:
134:1,534 t (1,510 long tons) submerged
16:For other ships with the same name, see
424:
388:
431:
215:, 1,670 shp (1,240 kW) total
205:, 3,400 bhp (2,500 kW) total
167:7.54 m (24 ft 9 in) o/a
146:83.50 m (273 ft 11 in)
22:
152:65.75 m (215 ft 9 in)
34:
7:
242:(31 km/h; 20 mph) surfaced
14:
670:World War I submarines of Germany
317:8.8 cm (3.5 in) SK L/30
476:U-boats and Mine Warfare Vessels
307:15 cm (5.9 in) SK L/45
36:
1:
680:U-boats commissioned in 1918
372:First Battle of the Atlantic
366:. U-138 was engaged in the
706:
647:List of U-boats of Germany
15:
642:
622:
530:
396:
325:
102:
29:
25:
399:) and combined with the
188:4.26 m (14 ft)
180:9.46 m (31 ft)
103:General characteristics
73:Kaiserliche Werft Danzig
409:His Majesty's Submarine
407:would be translated as
274:75 m (246 ft)
112:Type Large MS submarine
18:German submarine U-138
690:Ships built in Danzig
685:Type U 127 submarines
524:Type U 127 submarines
444:Helgason, GuĂ°mundur.
370:and took part in the
446:"WWI U-boats: U 138"
360:Imperial German Navy
354:was one of the 329
655:
654:
434:, pp. 15–16.
346:
345:
697:
517:
510:
503:
494:
489:
461:
460:
458:
456:
441:
435:
429:
412:
398:
393:
296:(4 bow, 2 stern)
227:propeller shafts
46:
41:
40:
39:
23:
705:
704:
700:
699:
698:
696:
695:
694:
660:
659:
656:
651:
638:
618:
526:
521:
486:
473:
470:
465:
464:
454:
452:
443:
442:
438:
430:
426:
421:
416:
415:
394:
390:
385:
380:
358:serving in the
312:with 220 rounds
213:electric motors
193:Installed power
82:12 January 1917
42:
37:
35:
21:
12:
11:
5:
703:
701:
693:
692:
687:
682:
677:
672:
662:
661:
653:
652:
650:
649:
643:
640:
639:
637:
636:
630:
623:
620:
619:
617:
616:
609:
602:
595:
588:
581:
574:
567:
560:
553:
546:
539:
531:
528:
527:
522:
520:
519:
512:
505:
497:
491:
490:
484:
469:
466:
463:
462:
436:
423:
422:
420:
417:
414:
413:
387:
386:
384:
381:
379:
376:
344:
343:
340:
336:
335:
332:
328:
327:
326:Service record
323:
322:
321:
320:
313:
303:
297:
288:
284:
283:
280:
276:
275:
272:
268:
267:
266:
265:
262:
253:
249:
248:
247:
246:
243:
234:
230:
229:
223:
219:
218:
217:
216:
209:
206:
203:diesel engines
194:
190:
189:
186:
182:
181:
178:
174:
173:
172:
171:
168:
163:
159:
158:
157:
156:
150:
142:
138:
137:
136:
135:
132:
119:
115:
114:
109:
108:Class and type
105:
104:
100:
99:
96:
92:
91:
88:
84:
83:
80:
76:
75:
70:
66:
65:
62:
58:
57:
52:
48:
47:
32:
31:
27:
26:
13:
10:
9:
6:
4:
3:
2:
702:
691:
688:
686:
683:
681:
678:
676:
673:
671:
668:
667:
665:
658:
648:
645:
644:
641:
635:
634:Type Large MS
632:Followed by:
631:
629:
626:Preceded by:
625:
624:
621:
615:
614:
610:
608:
607:
603:
601:
600:
596:
594:
593:
589:
587:
586:
582:
580:
579:
575:
573:
572:
568:
566:
565:
561:
559:
558:
554:
552:
551:
547:
545:
544:
540:
538:
537:
533:
532:
529:
525:
518:
513:
511:
506:
504:
499:
498:
495:
487:
485:0-85177-593-4
481:
477:
472:
471:
467:
451:
447:
440:
437:
433:
428:
425:
418:
410:
406:
402:
397:His Majesty's
392:
389:
382:
377:
375:
373:
369:
368:naval warfare
365:
361:
357:
353:
352:
341:
338:
337:
333:
330:
329:
324:
318:
314:
311:
308:
304:
302:
298:
295:
294:torpedo tubes
291:
290:
289:
286:
285:
281:
278:
277:
273:
270:
269:
263:
260:
256:
255:
254:
251:
250:
244:
241:
237:
236:
235:
232:
231:
228:
224:
221:
220:
214:
210:
207:
204:
201:
197:
196:
195:
192:
191:
187:
184:
183:
179:
176:
175:
169:
166:
165:
164:
161:
160:
155:
154:pressure hull
151:
149:
145:
144:
143:
140:
139:
133:
130:
126:
122:
121:
120:
117:
116:
113:
110:
107:
106:
101:
97:
94:
93:
90:26 March 1918
89:
86:
85:
81:
78:
77:
74:
71:
68:
67:
63:
60:
59:
56:
53:
50:
49:
45:
44:German Empire
33:
28:
24:
19:
657:
612:
611:
605:
598:
591:
584:
577:
570:
563:
556:
549:
542:
535:
475:
468:Bibliography
453:. Retrieved
449:
439:
427:
408:
405:Unterseeboot
404:
400:
391:
350:
348:
347:
257:10,000
118:Displacement
87:Commissioned
54:
432:Gröner 1991
364:World War I
331:Operations:
123:1,175
64:27 May 1916
675:1917 ships
664:Categories
628:Type UE II
455:22 January
378:References
356:submarines
339:Victories:
279:Complement
271:Test depth
222:Propulsion
131:) surfaced
419:Citations
301:torpedoes
129:long tons
319:deck gun
310:deck gun
287:Armament
79:Launched
185:Draught
127:(1,156
98:Unknown
69:Builder
61:Ordered
30:History
482:
282:44 men
177:Height
141:Length
613:U-138
606:U-137
599:U-136
592:U-135
585:U-134
578:U-133
571:U-132
564:U-131
557:U-130
550:U-129
543:U-128
536:U-127
383:Notes
351:U-138
299:16 Ă—
252:Range
240:knots
233:Speed
55:U-138
480:ISBN
457:2010
403:for
342:None
334:None
315:1 Ă—
305:1 Ă—
292:6 Ă—
225:2 Ă—
211:2 Ă—
198:2 Ă—
162:Beam
95:Fate
51:Name
362:in
349:SM
259:nmi
238:17
200:MAN
148:o/a
666::
448:.
374:.
516:e
509:t
502:v
488:.
459:.
411:.
401:U
125:t
20:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.