09/24/14

Tiger I Modifications List

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Tiger I Modifications List 

(copyright Thomas L. Jentz 2001)

Modification Intro Date Described in Reference 1 Text Section Shown on Drawing* in Reference 1 Reference Book Accurately Showing Each Modification 
  Ref.1 Ref.2 Ref.3 Ref.4
Bent narrow front track guard May42 3.4.1.3 Pg86-88 X X / /
Drive sprocket ring alignment Aug42 3.4.1.6 Pg86-88 X X /
Jul42 tools w/5 cleaning rods Aug42 3.4.1.4    
Vent slit in engine hatch Aug42 3.4.1.7    
Hooks to hold rear louvers open Aug42 3.4.1.7 Pg86-88 X X / /
Hinged flapper on exhaust Aug42 3.4.1.5 Pg86-88 X X / /
Pz.III baggage bin (middle) Aug42 3.4.2.3 Pg86-88 X X
Holes to mount camouflage frame Aug42 3.4.1.8 Pg86-88 X X / /
Smoke candle dischargers Aug42 3.4.2.1 Pg86-88 X X / /
Track cable on hull side Sep42 3.4.1.4 Pg86-88 X X / /
Two hinged toggle bolts Sep42 3.4.1.5 Pg86-88 X X / /
Tarp tabs Sep42 3.4.1.4 Pg86-88 X X
Full tool set Sep42 3.4.1.4 Pg86-88 X X / /
Delete antenna base on rear Oct42 3.4.1.10 Pg86-88 X X /
Brackets “Feifel” air filters Oct42 3.4.1.11 Pg86-88 X X / /
Cylindrical convoy tail light Oct42 3.4.1.4 Pg86-88 X X / /
Tow cables reversed Oct42 3.4.1.4 Pg100-102 X X / /
Shovel on glacis Oct42 3.4.1.4 Pg100-102 X / / /
Mounted “Feifel” air filters Nov42 3.4.1.11 Pg100-102 X / / /
Track guards on sides Nov42 3.4.1.3 X X / /
Pins on cupola for rain shield Nov42 3.4.2.5 Pg100-102 X X / /
Single piece side track guards Nov42 3.4.1.3 Pg100-102 X X / /
Hinged track guard front & rear Nov42 3.4.1.3 Pg100-102 X X / /
Reinforced gun mantle Nov42 3.4.2.7 Pg120-122 X X / /
Crew compartment heater Dec42 3.4.1.9 X  
Emergency escape hatch Dec42 3.4.2.8 Pg100-102 X X / /
Track tool stowage box Dec42 3.4.1.4 Pg100-102 X   /
Hull side at front not notched Dec42 3.4.1.4 X /
Last Pz.III stowage bin (high) Dec42 3.4.2.3    
Extended hull side at front Dec42 3.4.1.4 Pg100-102 X X / /
Starter plate mounted vertical Dec42 3.4.1.4 Pg100-102 X X / /
Straight side track guards Dec42 3.4.1.3 Pg100-102 X X / /
Mounts for S-Minen dischargers Dec42 3.4.2.11 Pg100-102 X / / /
Cables and antenna stowage moved Dec42 3.4.1.4 Pg100-102 X / / /
S-Minen dischargers Jan43 3.4.2.11 Pg120-122 X   / /
Exhaust muffler guard Jan43 3.4.1.14 Pg100-102 X X / /
Triangle ends on side track guards Jan43 3.4.1.3 Pg100-102 X X / /
Gun mantle cut for Tiger P Jan43 3.4.2.7 Pg100-102 X   /
Tiger baggage bin Jan43 3.4.2.3 Pg100-102 X X / /
6 cleaning rods Feb43 3.4.1.4 Pg100-102 X X / /
Starter shaft on lower hull rear Feb43 3.4.1.4 Pg100-102 X X / /
Engine compartment vent cover Feb43 3.4.1.7 Pg100-102 X / / /
18 bolts holding roadwheel rim Feb43 3.4.1.15 Pg100-102 /  
Stop K.F.F.2 Feb43 3.4.1.16 Pg100-102 X X / /
Ring retainer for track pins Mar43 3.4.1.12 / / /
Modified “Feifel” air filters Mar43 3.4.1.11 Pg120-122 X   / /
Triangle cover on rear deck Mar43 3.4.1.7 Pg120-122 X X /
Loader’s periscope Mar43 3.4.2.15 Pg120-122 X X / /
3 spare track holders Apr43 3.4.2.16 /   / /
Same casting for rear louvers Apr43 3.4.1.7 Pg120-122 X X
12 bolts holding roadwheel rim Apr43 3.4.1.15 /   / /
Drive sprocket hub Apr43 3.4.1.6 Pg120-122 X X / /
Flippy on engine hatch sides Apr43 3.4.1.7 Pg162-164 X X /
2 spare track holders Apr43 3.4.2.16 Pg120-122 X X / /
Maybach HL230 May43 3.4.1.18 Pg120-122 X X X /
Drop frames rear track guard May43 3.4.1.3 Pg120-122 X X /
Drop smoke candle dischargers Jun43 3.4.2.1 Pg134-135 X X / /
Shock absorber mounting Jun43 3.4.1.19 Pg134-135 X  
Drop two hinged toggle bolts Jun43 3.4.1.5 Pg134-135 X X / /
New turret w/cast dupola Jul43 3.4.2.20 Pg134-135 X X / /
Pistol port plug & uncut escape Jul43 3.4.2.20 Pg134-135 X   /
Zimmerit Aug43 App.F / / / /
Forged cap on combustion air intake Aug43 3.4.1.7 Pg134-135 X X
Stop Tiger P gun mantle Aug43 Pg134-135 X X /
New holders for track cable Aug43 3.4.1.4 Pg134-135 X X / /
Single headlight Aug43 3.4.1.21 /  
Wider slit in turret vision ports Aug43 3.4.2.20 Pg134-135 X X /
Tab on glacis to secure MG plug Aug43 3.4.1.4 Pg134-135 X X /
Stop submerged fording Sep43 3.4.1.5 Pg134-135 X X /
Add C-clamps top and rear Sep43 3.4.1.4 Pg140-141 X X / /
Chevrons on track Oct43 3.4.1.12 Pg134-135 X X / /
Headlight centered Oct43 3.4.1.21 Pg134-135 X X /
Stop S-Minen dischargers Oct43 3.4.2.11 Pg134-135 X X / /
Drop loader’s hatch lock disc Oct43 3.4.2.20 Pg134-135 X X /
Hand crank by antenna base Oct43 3.4.1.4 Pg134-135 X /
Stop pistol port plug Oct43 3.4.2.20 Pg140-141 X X / /
Stop track tool stowage box Oct43 3.4.1.4 Pg140-141 X X / /
Stop “Feifel” filters Oct43 3.4.1.11 Pg140-141 X X / /
External travel lock Nov43 3.4.2.21 Pg140-141 X   / /
Stop mounts for “Feifel” filters Dec43 3.4.1.11 Pg140-141 X X / /
20 t jack Jan44 3.4.1.4 Pg140-141 X X /
Stop shovel on glacis Jan44 3.4.1.4 Pg140-141 X X /
Cut hull side extension front & rear Jan44 3.4.1.4 Pg162-164 X X /
Cupola w/o 12-hour indicator ring Feb44 3.4.2.20 Pg162-164 X X /
Steel-tired roadwheels Feb44 3.4.1.24 Pg162-164 X X / /
“Fuchs” engine coolant heater Feb44 3.4.1.9 Pg162-164 X X
Turret ring guard & move tools Feb44 3.4.2.22 Pg162-164 X X /
Stop external travel lock Feb44 3.4.2.21 Pg162-164 X X /
600 mm diameter idler Feb44 3.4.1.25 Pg162-164 X X
Mounting bolt holes on starter plate Feb44 3.4.1.4 Pg162-164 X X /
40 mm turret roof Mar44 3.4.2.23 Pg162-164 X X /
Short hinged loader’s hatch Mar44 3.4.2.23 Pg162-164 X X /
Nahverteidigungswaffe Mar44 3.4.2.24 Pg162-164 X X /
T.Z.F.9c monocular gun sight Mar44 3.4.2.25 Pg162-164 X X /
Lighter muzzle brake with insert Apr44 3.4.2.26 Pg162-164 X X
Wood deck over fuel tanks Apr44 3.4.1.26 Pg162-164 X X
Dropped seal engine air cap May44 3.4.1.7 Pg162-164 X X
Trackpin return plate wider/angled  May44 3.4.1.12 Pg162-164 X X
2-piece 40 mm roof May44 3.4.2.23 Pg162-164 X X
Drain slits in cupola May44 3.4.2.23 Pg162-164 X X /
2 bolt escape hatch hinge Jun44 Pg162-164 X X
Three sockets for jib boom Jun44 3.4.2.27 Pg162-164 X X /
Poison gas detection panels Jul44 3.4.2.29    

X – denotes clear enough to model at 1:35 scale     / – denotes feature can be seen in a photo* Drawings of Tiger Fgst.Nr.V1 on pages 38-40 of Ref.1 are the basic starting point.

Ref.1 Germany’s Tiger Tanks – DW to Tiger I by Thomas L. Jentz and Hilary L. Doyle

Ref.2 Panzer Tracts No.6 schwere Panzerkampfwagen by Thomas L. Jentz and Hilary L. Doyle, Panzer Tracts

Ref.3 Panzer-Kampfwagen Tiger und Seine Abarten by Walter J. Spielberger, Motorbuch Verlag

Ref.4 Tiger I, Heavy Tank 1942-1945 by Tom Jentz and Hilary Doyle, New Vanguard

Creating an Accurate Tiger I Model

by Thomas L. Jentz and Hilary L. Doyle

Panzer Tracts

09/24/14

First U-Boat Of WWI Sunk

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A painting depicting the final moments of U-15.

9 AUGUST 1914

On 8 August 1914, the First Light Cruiser Squadron, part of the Royal Navy’s Grand Fleet based at Scapa Flow, had set out on a patrol. Comprising HMS Southampton, HMS Birmingham, HMS Liverpool, HMS Falmouth, and the recently joined HMS Nottingham, the First Light Cruiser Squadron had been ordered to capture or sunk German trawlers, as well as destroy the wireless apparatus on any neutral trawlers encountered.

The patrol was relatively uneventful until about 03.00 hours on the morning of Sunday, 9 August 1914, at which point the cruisers were to the northward of Kinnaird Head on the east coast of Scotland. Lieutenant Stephen King- Hall, who had just come off the first watch, later recalled what happened next:

“I was awakened by the noise of the alarm bells ringing furiously. I pulled on some clothes and ran up on deck, to find it was early dawn, rainy and misty. Every second or so the mistiness ahead was illuminated by a yellow flash, and the crash of a gun followed.

“Suddenly the Birmingham loomed up straight ahead, or a shade on our starboard bow, distant about 2½ cables (500 yards). It was difficult at the moment to say whether the shells falling between us and the Birmingham were being fired by the Birmingham, or at her from a ship on the far side. I restrained our quarter-deck guns’ crew from firing into the Birmingham; she looked rather Teutonic in the early morning light. The mystery of the alarm was settled by the sudden appearance of part of the conning-tower of a German submarine, exactly between ourselves and the Birmingham. How the Birmingham actually turned and rammed her I could not see; but she did, and when the Birmingham turned away, a large oily pool, bubbling furiously, with three black objects resembling air-flasks floating in it, was all that remained of the U-boat.”

The victim of the ramming by HMS Birmingham was the Type U13 submarine U-15. Despite the thick fog, an alert look-out on the cruiser had spotted U-15 stationary on the surface, her engines having apparently failed. Birmingham’s guns opened fire, damaging the submarine’s conning tower and periscope. At the same time, her captain, Captain Arthur Duff, ordered the cruiser’s engines to full speed. At the same time, the U-boat’s commander, Kapitänleutnant Richard Pohle, instructed his crew to dive, but his actions were too late. Moments later HMS Birmingham’s bows slammed into U-15. The U-boat rolled over and sank with the loss of all hands – twenty-five men in total. She was the first U-boat loss to an enemy warship and the first U-boat sunk in the First World War.

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