Weak Spot Guide: Strv 103b

The 9.17 World of Tanks update introduced Swedish tanks and with them came the tier 10 Strv 103b tank destroyer.  The Strv 103b features a unique tank design with a hydropneumatic suspension, heavily angled armor, and frontal spaced armor layout.  The Strv 103b doesn’t blow you away with sheer armor thickness with its 20mm-60mm of armor.  A first glance is misleading since the upper glacis is angled at 79° and the lower glacis at 72°.  Not only do these pose a threat for ricochets but they also drastically improve the armor’s effectiveness.  This guide for World of Tanks Strv 103b weak spots will fully break down the tank’s armor frontally since the sides/rear of the tank are easy to tackle.

World of Tanks Strv 103b Weak Spots | Spaced Armor View |

First thing to understand about the Strv 103b is its anti-HEAT spaced armor grill and the lower glacis spaced armor.  Across the front of the tank the anti-HEAT grill covers the entire upper glacis with a small opening for the gun, which also has its own spaced armor around it.  Unless you are close to a Strv 103b firing down into it you will be tough pressed to find an area of the upper glacis not shielded by this spaced armor.  While it is only 10mm thick at a 11° angle it will detonate high-explosive shells, and wreck havoc on HEAT shells.  Against AP/APCR it will reduce their effectiveness slightly but not significantly compared to HE/HEAT.

The lower glacis sees its spaced armor rise to a thickness of 30mm and is angled mostly from 17° to 67°.  This raises its effective armor values to 31mm-71mm respectively.  Between the upper and lower spaced armor areas you will find a small gap not covered by spaced armor. Good luck hitting that at mid to long range!  There is also a small commander’s cupola exposed on the top of the Strv 103b.

World of Tanks Strv 103b Weak Spots | Front Hull View|

Lower Glacis

Now that the spaced armor is covered for the Strb 103 B we can move onto the meat of its armor found on the hull.  Starting at the lower glacis you find the small exposed gap which is extremely vulnerable at 129mm effective armor.  Beneath this the effective armor values rise to 160mm-206mm due to the spaced armor.  Since the armor is only 40mm thick guns over 120mm(so 122mm+) can overmatch the hull armor with ease.  Firing HEAT shells is not advised since the armor is not very strong here and the lower you shoot the greater the gap between hull and spaced armor becomes.

Upper Glacis

Moving further up the tank to the upper glacis you find the same small gap not covered by spaced armor.  This area is 40mm thick angled at 79° giving it an effective armor value of 210mm.  Guns with a caliber of 122mm+ can overmatch while anything lower than that will ricochet off if firing AP/APCR.  If faced with shooting at this area with a 120mm or smaller caliber gun try to negate the angle by closing into the Strv 103b.  Since this area is very small hitting it with HEAT is extremely difficult and not advised.  Above this gap you find the armor of the Strv 103b goes from 40mm to 50mm, to 60mm, and then back down to 50mm.  There is also a strip of 40mm armor extending up the middle of the tank where the gun sits.

These areas are covered by the anti-HEAT grill and will be difficult for any HEAT shells to penetrate.  HEAT shell penetration losses are covered at the bottom of this guide since once a HEAT shell hits spaced armor it loses penetration until it hits hull armor.  The upper glacis ranges from 220mm up to 324mm effective armor and with it sitting at 79° it will ricochet AP/APCR unless the angle is negated.  For 40mm thick sections(green/yellow) 122mm+ caliber guns can overmatch and remove the ricochet chance. 50mm sections provide protection against all guns that fall beneath 152mm.  Finally the areas with 60mm protect the Strv 103b from gun calibers 183mm and under.

Commander’s Cupola + Overmatching

Lastly, the small commander’s cupola is virtually unprotected at 20mm-30mm thick making it a prime target if readily available.  Often times you will find it hard to hit with how the Strv 103b sets up on hilly terrain.  The trick to tackling the Strv 103b’s armor frontally is knowing where you can overmatch its armor until the new overmatch mechanics are introduced.  For guns 120mm and smaller you are faced with a tough challenge if the lower glacis is not available or the commander’s cupola.  If the lower glacis is visible of a “hull down” Strv 103b it often loses much of its armor angle removing chances of ricochets.  Otherwise closing in on the Strv 103b allows you to shoot down into it, thus negating the anti-HEAT grill and upper glacis armor.

High-explosive shells will still cause critical damage plus significant damage hitting where the upper and lower glacis meets.  The Strv 103b also is crippled if enemies get within 50m since it cannot fight properly outside of siege mode.

World of Tanks Strv 103b Weak Spots | Aerial View |

This view gives a view of the different thicknesses on the upper glacis and also the spaced armor.

World of Tanks Strv 103b Weak Spots | Spaced Armor View |

The last part of this guide for World of Tanks Strv 103b weak spots focuses on HEAT shells and penetration loss.  When a HEAT shell hits the spaced armor on the front of the Strv 103b(or any other tank with spaced armor) it loses penetration from that point until it hits the hull.  Each line represents roughly -10% penetration loss for HEAT shells after they pass through the initial 10mm of spaced armor.  Looking at the image shows that HEAT shells will lose all penetration capability roughly halfway up the Strv 103b’s upper glacis.  If you are determined to shoot HEAT at a Strv 103b make sure you aim lower down on the upper glacis and higher up on the lower glacis.  In the lower glacis’ case HEAT shells will lose more penetration the closer to the ground you shoot.

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