R'sisho-pattern Tick

From Halopedia, the Halo wiki

This article is about the Covenant boarding craft introduced in Halo 2. For the boarding craft seen in Halo: Combat Evolved, see Brhi Xur-pattern Leech.
R'sisho-pattern Ship Breacher
A cropped screenshot of the R'sisho-pattern Tick boarding craft on the level Cairo Station.
Production information


Assembly Forges[1][2]


Boarding craft[1][2]

Technical specifications


62 meters (204 ft)[1][2]


35 meters (116 ft)[1][2]


28.1 meters (92.2 ft)[1][2]


194.4 metric tons (191.3 LT; 214.3 ST)[2]


Impulse drives[1]


75 passengers[2]


1 pilot[2]

Chronological and affiliation


Human-Covenant War


Independent Sangheili factions


The R'sisho-pattern Ship Breacher[2] (UNSC Type classification: Type-28 Intrusion Vehicle, T-28 IV)[3][1] or simply the Tick, is a Covenant ship specifically designed for boarding an enemy vessel.[4]


Design details[edit]

The Tick has an unconventional layout, consisting of a central boarding tube with three large arms surrounding it, facing the front of the vessel. Completely unarmed, the Tick is designed to launch itself at high speed toward an enemy target and clamp itself onto the hull, before extending a proboscis that cuts through the hull of the target vessel. Once the connection is secure, the craft's troop payload is free to exit the Tick and commence boarding operations. Once the mission is complete, the Tick retracts the boarding tube, unclamps, and boosts away to safety.[1][2] When the craft boards via windows it seems to use the outer edge of the boarding tube to superheat the glass, thus the glass does not shatter and depressurise the compartment.[4]

The entry tube for the Tick appears to have an energy shield coating preventing unauthorised entry from the outside, and has an antigravity system of some kind similar to High Charity's gravity bridges, which pushes troops out of the front of the Tick.[4]


The Tick is a boarding craft similar in nature to the Brhi Xur-pattern Leech, and is such only intended for use as a specialised dropship in naval boarding actions. Due to the overwhelming disparity of firepower found on Covenant starships, such actions are generally a rarity (especially during the Human-Covenant War), and generally occur only at the edict of a fleetmaster or San'Shyuum official.[2] Unlike the Leech, the Tick has very little in common with the Spirit dropship family and has no armaments to speak of, instead relying on its high-thrust impulse drives to navigate space at bone-crushing accelerations.[1] Due to the Tick's size, it is sometimes unsuitable for deployment in confined spaces; in these situations, the Leech or specialised Ru'swum-pattern Phantom conversions bearing docking connectors may be used instead.[3]

Halo: Fleet Battles[edit]

Covenant Type-28 Boarding Craft[edit]

  • Flight slots: 0
  • Movement: 12"
  • Damage track: 4
  • Security detail: 2
  • Systems loadout: Heroic save (Trooper)


In Halo 2, players cannot enter the boarding craft even when the shields for the entrance are turned off.


Halo 2[edit]

Halo 2: Anniversary[edit]

List of appearances[edit]


  1. ^ a b c d e f g h i Halo Waypoint, Tick (Retrieved on Jun 30, 2021) [archive]
  2. ^ a b c d e f g h i j k Halo Encyclopedia (2022 edition), page 281
  3. ^ a b Halo 4: The Essential Visual Guide, page 118
  4. ^ a b c Halo 2, campaign level Cairo Station