Polearms in boarding and anti-boarding combat

Which polearm is better for boarding, a billhook or a halberd?

A long axe is best for cutting grapples and rigging in defence; for fighting aboard, a short halberd can hold passages, but long polearms are awkward during the initial crossing and on crowded decks.

A long axe is favoured for cutting grapples and rigging so that an enemy cannot secure its ship alongside. If a halberd must be carried aboard, a shorter weapon of roughly four to six feet is suggested. There is still an objection to taking one across during the initial boarding: before gunpowder, a two-handed weapon prevents the attacker carrying a shield against crossbows or longbows, while heavy armour is unlikely aboard ship. Once boarders have established a foothold, polearms can help hold stairs and stop defenders charging up them. Boarding pikes are distinguished as weapons for repelling boarders. A long polearm also needs clear space for lunges, which rigging, masts, stored gear, and friendly crew often deny.