34:
528:
were unreliable and the F2 subclass′s top surface speed of 14 knots (26 km/h; 16 mph) was well below the expected 17 knots (31 km/h; 20 mph). Because of their disappointing performance, the Type F submarines did not serve as the basis for any later
Japanese submarine classes.
488:(6,500 km; 4,000 mi) at 10 knots (19 km/h; 12 mph); submerged, they had a range of 80 nmi (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph).
366:
of the F2 subclass. The Type F submarines were the first truly seagoing
Japanese submarines, and the earliest to be classified as "second-class" or "medium" submarines of the
412:. They were the Imperial Japanese Navy′s first true seagoing submarines, and when the Japanese adopted a three-tiered classification system of its submarines as first-class (
927:
779:
473:
223:
449:
700 tonnes (689 long tons) surfaced and 1,064 tonnes (1,047 long tons) submerged. The submarines were 65.6 meters (215 ft 3 in) long and had a
457:
of 4.1 meters (13 ft 5 in). They had a diving depth of 40 meters (131 ft). For surface running, the submarines were powered by two 1,300-
430:) on 1 November 1924, the Type F submarines were the earliest to receive the second-class classification, as reflected in their low numbers in the
751:
484:(26 km/h; 16 mph) on the surface and 8 knots (15 km/h; 9.2 mph) underwater. On the surface, they had a range of 3,500
434:
series, and in fact they were the earliest
Japanese submarine classified as anything higher than third-class. They had non-cylindrical
613:
896:
616:, and on 1 December 1925 it returned to the Sasebo Defense Division in the Sasebo Naval District, where it remained for the rest of
772:
515:
334:
917:
438:
intended to provide extra internal space, but the
Japanese considered the hulls weak despite the provision of additional
922:
765:
890:
592:
564:
552:
401:
377:
58:
609:
871:
859:
819:
807:
357:
584:
587:
and assigned to
Submarine Division 23. On 1 December 1922, Submarine Division 23 was assigned to the
504:
316:
932:
446:
612:
in the Sasebo Naval
District on 1 December 1924. On 1 June 1925, the division was assigned to the
568:
747:
836:
796:
788:
360:
132:
469:
450:
207:
269:
80 nmi (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
714:
477:
226:
192:
911:
525:
485:
465:
397:
263:
216:
492:
454:
301:
542:
511:
481:
435:
325:
244:
266:(6,500 km; 4,000 mi) at 10 knots (19 km/h; 12 mph) surfaced
496:
458:
305:
185:
439:
426:
420:
368:
363:
414:
588:
507:
319:
757:
560:
500:
409:
393:
381:
309:
66:
556:
522:
462:
405:
213:
62:
761:
491:
The submarines were armed with five 450 mm (18 in)
376:
was commissioned in 1922 and operated in the waters of
746:, Annapolis, Maryland: Naval Institute Press, 1985,
835:
795:
744:Conway′s All the World′s Fighting Ships 1906–1921
626:was stricken from the Navy list on 1 April 1932.
472:. When submerged each propeller was driven by a
709:
707:
705:
703:
701:
699:
697:
695:
693:
691:
250:8 knots (15 km/h; 9.2 mph) submerged
773:
8:
608:Submarine Division 23 was reassigned to the
453:of 6.1 meters (20 ft 0 in) and a
392:The Type F submarines were designed by the
158:65.6 m (215 ft 3 in) overall
780:
766:
758:
672:
670:
668:
666:
664:
662:
660:
658:
591:Defense Division on the southern coast of
510:. As built, they were armed with a 7.7 mm
656:
654:
652:
650:
648:
646:
644:
642:
640:
638:
928:Ships built by Kawasaki Heavy Industries
567:on 10 March 1921, she was completed and
442:during construction to reinforce them.
148:1,064 tonnes (1,047 long tons) submerged
634:
16:Imperial Japanese Navy Type F submarine
18:
30:
7:
514:. Soon after completion, however, a
247:(26 km/h; 16 mph) surfaced
145:700 tonnes (689 long tons) surfaced
445:The submarines of the F2 subclass
14:
897:Imperial Japanese Navy submarines
174:4.1 m (13 ft 5 in)
166:6.1 m (20 ft 0 in)
32:
889:Preceded by: none Followed by:
503:, and carried a total of eight
533:Construction and commissioning
191:1,200 shp (890 kW) (
1:
476:600-horsepower (447 kW)
300:5 Ă— 450 mm (18 in)
384:. She was stricken in 1932.
330:Added soon after completion:
111:on 1 November 1924
571:on 15 July 1922.
516:76.2 mm (3.00 in)
418:), second-class or medium (
400:and built under license by
335:76.2 mm (3 in)/40
949:
887:
123:
25:
21:
521:In the F2 subclass, the
188:(1,900 kW) (diesel)
610:Sasebo Defense Division
279:40 m (131 ft)
124:General characteristics
551:on 28 October 1918 by
480:. They could reach 14
388:Design and description
358:Imperial Japanese Navy
918:Ro-3-class submarines
585:Sasebo Naval District
605:on 1 November 1924.
583:was attached to the
579:Upon commissioning,
518:deck gun was added.
424:), and third-class (
742:Gray, Randal, ed.,
620:′s active service.
468:, each driving one
350:, originally named
923:Type F submarines
905:
904:
537:Ordered in 1918,
343:
342:
940:
891:Type L submarine
840:-class (Type F2)
800:-class (Type F1)
789:Type F submarine
782:
775:
768:
759:
731:
730:
728:
726:
719:iijnsubsite.info
711:
686:
683:
677:
674:
597:Submarine No. 31
581:Submarine No. 31
548:Submarine No. 31
459:brake-horsepower
353:Submarine No. 31
219:, 58.4 tons fuel
133:Type F submarine
49:Submarine No. 31
40:
37:
36:
35:
19:
948:
947:
943:
942:
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937:
908:
907:
906:
901:
893:
883:
831:
791:
786:
739:
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724:
722:
715:"RO-3 ex No-31"
713:
712:
689:
684:
680:
675:
636:
632:
577:
575:Service history
535:
499:and two in the
495:, three in the
470:propeller shaft
390:
227:electric motors
208:Diesel-electric
179:Installed power
76:28 October 1919
38:
33:
31:
17:
12:
11:
5:
946:
944:
936:
935:
930:
925:
920:
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735:
733:
732:
687:
678:
633:
631:
628:
576:
573:
534:
531:
526:diesel engines
486:nautical miles
478:electric motor
466:diesel engines
461:(969 kW)
389:
386:
341:
340:
339:
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331:
328:
322:
313:
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258:
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217:diesel engines
210:
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129:Class and type
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28:
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23:
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15:
13:
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3:
2:
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752:0 87021 907 3
749:
745:
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736:
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710:
708:
706:
704:
702:
700:
698:
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694:
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688:
685:Gray, p. 245.
682:
679:
676:Gray, p. 247.
673:
671:
669:
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665:
663:
661:
659:
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629:
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621:
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532:
530:
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519:
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498:
494:
493:torpedo tubes
489:
487:
483:
479:
475:
471:
467:
464:
460:
456:
452:
448:
443:
441:
437:
433:
429:
428:
423:
422:
417:
416:
411:
407:
403:
399:
398:Fiat-Laurenti
395:
387:
385:
383:
379:
375:
371:
370:
365:
362:
359:
355:
354:
349:
348:
336:
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323:
321:
318:
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311:
307:
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302:torpedo tubes
299:
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147:
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135:(F2 subclass)
134:
131:
128:
127:
122:
118:
115:
114:
110:
107:
104:
103:
99:
96:
95:
91:
88:
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84:10 March 1921
83:
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68:
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60:
57:
54:
53:
50:
47:
44:
43:
29:
24:
20:
877:
872:
865:
860:
853:
848:
847:
837:
825:
820:
813:
808:
797:
743:
737:Bibliography
723:. Retrieved
718:
681:
623:
622:
617:
607:
601:
600:
599:was renamed
596:
580:
578:
569:commissioned
547:
546:
538:
536:
520:
490:
444:
431:
425:
419:
413:
391:
373:
367:
352:
351:
346:
345:
344:
140:Displacement
119:1 April 1932
108:
100:15 July 1922
97:Commissioned
92:15 July 1922
48:
512:machine gun
326:machine gun
324:1 x 7.7 mm
262:3,500
184:2,600
933:1921 ships
912:Categories
725:22 October
474:Savigliano
440:scantlings
276:Test depth
231:2 x shafts
224:Savigliano
202:Propulsion
614:1st Fleet
543:laid down
508:torpedoes
447:displaced
364:submarine
356:, was an
320:torpedoes
297:As built:
89:Completed
73:Laid down
565:Launched
553:Kawasaki
402:Kawasaki
372:series.
337:deck gun
292:Armament
116:Stricken
81:Launched
59:Kawasaki
589:Chinkai
505:Type 44
394:Italian
317:Type 44
105:Renamed
65:,
55:Builder
26:History
878:No. 33
866:No. 32
854:No. 31
826:No. 21
814:No. 18
750:
721:. 2017
593:ChĹŤsen
378:ChĹŤsen
361:Type F
308:, 2 x
155:Length
630:Notes
561:Japan
501:stern
482:knots
455:draft
436:hulls
410:Japan
396:firm
382:Japan
310:stern
304:(3 x
257:Range
245:knots
238:Speed
171:Draft
67:Japan
39:Japan
876:(ex-
873:Ro-5
864:(ex-
861:Ro-4
852:(ex-
849:Ro-3
838:Ro-3
824:(ex-
821:Ro-2
812:(ex-
809:Ro-1
798:Ro-1
748:ISBN
727:2020
624:Ro-3
618:Ro-3
602:Ro-3
557:Kobe
541:was
539:Ro-3
523:Fiat
463:Fiat
451:beam
406:Kobe
380:and
374:Ro-3
347:Ro-3
333:1 Ă—
315:8 x
284:Crew
222:2 Ă—
214:Fiat
212:2 Ă—
163:Beam
109:Ro-3
63:Kobe
45:Name
555:at
545:as
497:bow
404:at
306:bow
264:nmi
243:14
186:bhp
914::
717:.
690:^
637:^
595:.
563:.
559:,
432:Ro
427:Ha
421:Ro
408:,
369:Ro
287:43
61:,
880:)
868:)
856:)
828:)
816:)
781:e
774:t
767:v
754:.
729:.
415:I
312:)
195:)
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