In a desperate laning situation, Gangplank has a lot of ability to just stay in lane and farm as much as possible. Parrrley's range and mana cost reduction upon last-hits let Gangplank farm even with the enemy efforts to completely zone him, building gold per 10 items let him stay in the game despite the enemy controlling the lane (especially Philosopher's Stone as its regeneration stats will be invaluable to such a situation), Cannon Barrage and Raise Morale can be used to quickly aid allies even if you are pushed to your turret, and Remove Scurvy sustains you against enemy harassment. This strategy would prefer maxing Raise Morale for the attack damage bonus to better allow you to last-hit under your turret, with Remove Scurvy as necessary to sustain and stay in lane. Leveling up Parrrley first in this situation is unpreferable due to the mana-cost increase while the gold-bonus increase gain is less useful than simply casting Parrrley again and gaining another last-hit, or having more attack damage from Raise Morale to gain more last-hits underneath the turret while Parrrley can be on cooldown.
Raise Morale can be used defensively and offensively, to be able to move fast for both, and have extra damage for the latter.
Use Raise Morale when pushing a tower. This can quickly give you and your allies the boost you need to take down buildings, effectively allowing you and your team to rush towers and your enemies not having enough time to defend it.
Cannon Barrage can be used across the map. You can help out in ganks/teamfights elsewhere, by assisting with the damage and massive AoE slow.
Paying attention to low health enemies on the map can land you a surprise kill with Cannon Barrage.
Try placing Cannon Barrage in the path of fleeing enemies to cut them off.
Cannon Barrage can save a turret surrounded by minions, with some luck.
'Tankplank' builds are very effective, offering survivability and a chance for Gangplank to fully utilize his skillset. It also allows Gangplank to increase his DPS as he builds towards an Infinity Edge.
Laning against Gangplank can be a bit frustrating. Parrrley has a fairly short cooldown and deals a lot of damage at early if it crits. Starting with Cloth Armor and 5 Health Potion's will give you a lot of sustain and damage reduction to deal with this.
普朗克的Remove Scurvy is very annoying to the casters that rely on crowd control to utilize their full combo. Save your hard crowd control until after he uses Remove Scurvy.
Champions with multiple crowd control abilities, namely Blitzcrank, can significantly slow down Gangplank, despite his Remove Scurvy. Since this ability only removes the current debuff, one can use a "soft" CC ability (such as a slow) to force him to use Remove Scurvy, then utilize their "hard" CC (such as a stun or suppress) to really begin harassing him. Also keep in mind that AOE or constantly-reapplied CC (such as Yorick omen of pestilence, or Miss Fortune's ground AOE) are reapplied immediately after being removed, so with Remove Scurvy's cast time ends up actually taking longer to get past. Airborne CC (knockups/knockbacks, pulls) cannot be cleansed, so CC from Alistar and Blitzcrank are not countered.
Although his early harassment is strong, Gangplank is fairly squishy in laning phase. Putting an aggressive pressure on his lane will weaken his strong mid/late game.
Cannon Barrage has a huge AoE and global range. Quickly avoid the AoE if he uses it when you are escaping. Be aware of its potential to appear at any time/location.
Countering Gangplank requires starving him of his farm, get an early advantage by pushing him out of the lane, and forcing him to play with more risk than he would usually like. Teams should also consider prioritizing him as a target for ganks and in team fights depending on his build and his allies.
Being aware of his Remove Scurvy would give you an advantage as the ability's cooldown if fairly long compared to the amount of cc available within your kit. Casting a minor cc skill would force a Gangplank to use this ability and press your damage as much as possible within the interval of his Remove Scurvy