List of Super Heavy boosters

[2] SpaceX aims to achieve this by reusing both rocket stages, increasing payload mass to orbit, increasing launch frequency, creating a mass-manufacturing pipeline and adapting it to a wide range of space missions.

[3][4] Starship is the latest project in SpaceX's reusable launch system development program and plan to colonize Mars.

[7] The Super Heavy booster is reusable, and is recovered via large arms on the tower capable of catching the descending vehicle.

Booster 3 completed stacking in the High Bay on June 29, 2021,[17] and moved to the test stand.

BN3/Booster 3 was partially scrapped on August 15, while the liquid oxygen (LOX) tank remained welded to the Test Stand until January 13, 2022.

S20 was stacked on top of Booster 4 on August 6, 2021 for a fitting test,[23] making it, for two years, the tallest rocket ever fully integrated.

B7 was placed on the orbital launch mount on March 31, 2022, and completed two cryogenic proof tests in April, resulting in the rupturing of the downcomer.

[40] Ship 24 was stacked on top B7 on October 12,[41] and was removed after completing multiple cryogenic load tests.

[47] In January 2023, Booster 7 and Ship 24 conducted a wet dress rehearsal,[48] before attempting a 33-engine static fire on February 9.

[49] On April 20, 2023, Booster 7 was launched on Integrated Flight Test 1, being destroyed before stage separation after a fire in the aft section severed connections between its engines and flight computers, resulting in a loss of attitude control and FTS activation.

B9 finished stacking in late 2022, and featured upgrades, including electric thrust vector control (ETVC) gimbaling system of the raptor engines, replacing the previous hydraulic power units that were used up to Booster 8.

It was then moved off of OLM A and rolled back to Mega Bay 1, where its vented interstage was added on August 16.

[53] B9 was moved back to OLM A on August 22 and underwent another spin prime test the next day.

[61] On April 7, it was removed from OLM A,[60] and rolled back to Mega Bay 1 for pre-flight modifications.

[60] On June 6, B11 and S29 launched on IFT-4, with a single engine failure occurring shortly after liftoff.

[68][69] On October 9, Vice President of Build and Flight Reliability of SpaceX, Bill Gerstenmaier, claimed that B11 landed within "half a centimeter" of the target.

[79] A second partial wet dress rehearsal occurred on October 7,[80] followed by S30 being destacked for FTS installation.

[71] B12 and S30 launched on October 13, with B12 successfully conducting the ascent, boostback, and landing burns with no engine failures, before being caught by the gantry chopsticks,[83] and lowered onto OLM A.

[84] Musk claimed that B12 suffered damage that could be "easily addressed", including warping of the outer engine nozzles.

[85] B12's FTS was removed on October 14,[86] followed by being returned to Mega Bay 1 for post-flight inspections.

B13 and subsequent vehicles have upgraded liquid oxygen vents, a new raceway design, and reinforced chines.

However, the "catch" attempt was called off due to an issue with the launch tower,[101] and the booster was diverted to splashdown in the Gulf of Mexico.

[114] On January 9, Ship 33 (S33) was stacked onto the booster,[115] surpassing Starship Block 1 as the tallest rocket ever assembled.

[118] On January 16, B14 launched with S33, conducting a nominal ascent burn, and successfully separated from the upper stage.

[138][139] B6.1 was originally intended to be the third flight-worthy Super Heavy, but was repurposed as a test tank.

[143] After repairs, it underwent a fourth cryogenic proof test on July 27, 2022, a fifth on September 1, 2022, and a sixth five days later.

[146] Hot Stage Load Head (HSLH) was a test article designed to verify the structural integrity of the interstage of Super Heavy Boosters 9+.

[152] After structural testing at Masseys, it was moved to the launch site on June 21, 2024,[153] and lifted onto OLM A.

[161] Two days later, it underwent a cryogenic proof test to destruction, bursting at 8.5 bar (123 psi).

[164] It was rolled back to the launch site in November 2021, where it underwent an apparent cryogenic proof test to failure on January 18, 2022, where it burst at an unknown pressure.