"Four. Gilgamesh will carry one man only. The hopper will carry a crew of three. The pilot of Gilgamesh will establish the ship on the edge of the cliff, supported on antigrav a foot or so above the ground and leaning towards the sea at an angle of approximately 20° with the vertical. Except for this landing will be automatic.
"Five."
The colonel's voice has lulled us into passive acceptance; now we are jerked into sharper attention by the faintest possible check in it.
"The greatest danger attaching to the expedition is that the Incognitans may discover that the crash has been faked. This would be inevitable if they were to capture (a) the hopper; (b) any of the new installations in Gilgamesh, especially the antigrav; (c) any member of the crew.
"The function of the hopper is to pick up the pilot of Gilgamesh and also to check that ground appearances are consistent. If not, they will produce a landslip on the cliff edge, using power tools and explosives carried for the purpose. That is why the hopper has a crew of three, but the chance of their having to do this is slight."
So I should think; ground appearances are supposed to show that Gilgamesh landed using emergency rockets and then toppled over the cliff and this will be exactly what happened.
"The pilot will carry a one-frequency low-power transmitter activated by the change in magnetic field on leaving the ship. The hopper will remain at five hundred feet until this signal is received. It will then pick up the pilot, check ground appearances, and rendezvous with this ship at two hundred miles up at 18.27 hours."
The ship and the hopper both being radar-absorbent will not register on alarm systems, and by keeping to planetary nighttime they should be safe from being seen.
"Danger (b) will be dealt with as follows. The rocket-mounts being of peltathene will be destroyed by half an hour's immersion in water. The installations in the nose will be destroyed with Andite."
Andite produces complete colecular disruption in a very short range, hardly any damage outside it; the effect will be as though the nose broke off on impact; I suppose the Incognitans will waste a lot of time looking for it on the bed of the sea.