HMS Grafton

HMS Grafton

HMS Brissenden

HMS Grafton

HMS Brissenden

Britain

I Rank

Battle rating:

AB	RB	SB
3.7	3.7	3.7

Class:

Destroyer

Research:2 900

Purchase:700

Show in game

Description

The G-class, HMS Grafton (H89), 1936 is a rank I British destroyer with a battle rating of 3.7 (AB/RB/SB). It was introduced in Update 1.83 "Masters of the Sea" as part of the British fleet closed beta test.

HMS Grafton, pennant number H89, part of the G-class, is a destroyer built for the Royal Navy during the 1930s. She had a relatively short, diverse and honourable operational history.

It serves as a combat destroyer introduction to British captains. Grafton gives the chance to sense the game style of a combat-worthy destroyer. Unlike the HMS Churchill which are escort destroyers, she can stand its ground against similar or even superior enemies; thus providing a useful experience for the yet more powerful destroyers down the research tree.

General info

HMS Grafton performs excellently in the destroyer vs. destroyer area, thanks to her 4 x 120 mm 4.7 inch/45 Mk.XII main guns. Her mobility is also remarkable, but the less appealing aspects are her lacklustre anti-air defences and the yet below-average crew size. The ship surely stands out from the other low-rank destroyers because of her entirely dark-grey hull, with a maroon red deck. Although, she can be found using the completely different camouflage scheme of HMS bulldog (under the different pennant number H91) in western approaches' white tone. The ship features a completely raked bow and a hull with a lot of freeboard, similar to the Tribal-class hull. Another way to differentiate her from other destroyers, is her four single turrets, two at the bow and two located in the stern.

Notice the anti-air fire is expected to be low, mainly Vickers Mk.V (12.7 mm) turrets. A double set of quadruple torpedo mountings can be seen just abaft her two inclined funnels.

Survivability and armour

Armourfront / side / back

Main fire tower3 / 3 / 0 mm

Hull16 mm (steel)

Superstructure10 mm (steel)

Number of section7

Displacement1 920 t

Crew145 people

4.97 mm of antifragmentation armour plate on Grafton's main gun.

The crew size is an essential indicator of survivability amongst destroyers but HMS Grafton does not offer any significative advantage over other Rank I destroyers, with her crew being only of 145. Captains must be prudent in their combat actions to preserve the life of their complement.

The armour present on HMS is limited to gun shielding and turret protections consisting of:

• 12.7 mm of antifragmentation armour
• 4.97 mm of antifragmentation armour

This antifragmentation armour stops HE shells and low calibre machine guns (7.7 mm). But it won't be enough to stop heavy machine gun calibre or higher calibres (20 mm and larger), also any SAP shell or HE with base fuze will disable the turret. Thus the only use of the armour is to conceal and to fragment any HE shells; protecting the crew and the gun's breech from the shrapnel while the armour resists the damage.

• 

  Turret state after German HE (Sprgr. Kpf.Z) impact. Armour successfully deters the shell.

• 

  Turret state after German HE with base fuze (L/4.4 Bd.Z) impact; note the ammo rack damage.

• 

  Turret damage by Japanese Type 1 SAP. It causes lethal damage to the turret and the gun due to combined effects.

12.7 mm armour plate protecting the Vickers Mk.V AA mountings.

HMS Grafton's hull is made of 16 mm of steel while the superstructure is protected by 10 mm of steel.

This armour won't provide significant protection against most of the destroyer's main calibre shells (100+ mm). The hull armour is only practical against 12.7 mm or less. Any HE shell impact to the hull, will cause the total loss of crew in that compartment. Usually, shells with more than 2 kg of explosive mass.

The superstructure can protect against low calibre machine guns but any aircraft with automatic cannons like the Soviet IL-2s or the German Ju 87s will pierce the superstructure of the ship. Increasing the risk of an ammo rack detonation because of the aircraft's strafing rounds. This packed with the poor anti-air defences is not a good deed for survivability; be observant.

Ammo racks

On the bow section, is present an unsafe spot for the Grafton: the ammo racks. This area is filled with ready ammo racks near both turrets and just beneath it, a big stash of ammunition is located. This ammo storage is unprotected by any fuel tank or armour and is located above the waterline. Enemy ships will often target this zone with AP or HE with base fuze, because of how easy it is to hit it and detonate the main ammo rack.

APCBC shells found on destroyers such as those on the Italian bluewater ships at rank I, can cause catastrophic damage to the ammo rack with some precise shooting. The elevator for the ammo can also be damaged during combat, hindering the reload rate of the main guns.

The numerous torpedoes inside the torpedo tubes are actually well protected against HE and shrapnel. It is unlikely they will generate any harm for the Grafton- Only a very well placed SAP or AP shot might detonate them.

Mobility

Speedforward / back

AB75 / 22 km/h

RB61 / 18 km/h

HMS Grafton offers an increase in mobility to British captains. The speed is actually on par or superior to other destroyers in the rank. This allows the Grafton to perform bold and dynamic manoeuvres as a light and nimble combat destroyer. This is particularly pleasant in arcade mode, in which the Grafton can achieve a very respectable speed of 75 km/h.

Mobility Characteristics
Game Mode	Upgrade Status	Maximum Speed (km/h)		Turn Time (s)	Turn Radius (m)
		Forward	Reverse
AB	Stock	___	___
	Upgraded	75	22
RB/SB	Stock	___	___
	Upgraded	61	18

Mobility plays an important role in the playstyle of the Grafton. Because of the poor targeting speed of the main cannons, the H89 will need to often steer to help the turrets get on target. Captains must be clever to fire first using the mobility in their odds. With the torpedoes, something similar happens. The H89 needs to steer quite a lot to allow the release of torpedoes.

Performing evasive manoeuvres against planes or torpedoes shouldn't be much trouble for the agile Grafton.

Modifications and economy

Repair costBasic → Reference

AB218 → 279

RB338 → 433

Total cost of modifications3 120

960

Talisman cost190

Crew training200

Experts1 000

Aces20

Research Aces96 000

Reward for battleAB / RB / SB

30 / 60 / 100 %

100 / 100 / 100 %

Modifications

Seakeeping	Unsinkability	Firepower
Dry-Docking Research: 150 Cost: 45 60 Rudder Replacement Research: 110 Cost: 35 45 Propeller Replacement Research: 150 Cost: 45 60 Engine Maintenance Research: 160 Cost: 50 65	Damage Control Division Research: 150 Cost: 45 60 Fire Division Research: 110 Cost: 35 45 Smokescreen Research: 110 Cost: 35 45 Ventilation Research: 150 Cost: 45 60 Shrapnel Protection Research: 150 Cost: 45 60 New Pumps Research: 160 Cost: 50 65 Ammo Wetting Research: 160 Cost: 50 65	120mm_uk_navy_AP_ammo_pack Research: 150 Cost: 45 60 12.7 mm I Research: 150 Cost: 45 60 120mm_uk_navy_dist_fuse_he_ammo_pack Research: 110 Cost: 35 45 12.7 mm API Research: 110 Cost: 35 45 Auxiliary Armament Targeting Research: 110 Cost: 35 45 Improved Rangefinder Research: 150 Cost: 45 60 Improved Rangefinder Research: 150 Cost: 45 60 Primary Armament Targeting Research: 150 Cost: 45 60 120mm_uk_navy_radio_fuse_he_ammo_pack Research: 160 Cost: 50 65 Bomb mortar Research: 160 Cost: 50 65 Torpedo Mode Research: 160 Cost: 50 65

"Tool set" and "Fire protection equipment should be immediately acquired. After this, "smoke screen" and mobility modules can be researched over the firepower.

Armament

Primary armament

4 х Turret4.7 inch/45 Mk.XII cannon, СPXVII mounting

Ammunition200 rounds

Vertical guidance-10° / 40°

HMS Grafton is armed with 4 x turrets of 4.7 inch/45 Mk.XII (120 mm) guns.

These guns were used widely by destroyers during WWII. It is worth familiarizing yourself with the ballistics and the damage mechanics. They are remarkably adequate in terms of damage. The gun's explosive mass of 3 kg of TNT is excellent, a new taste of firepower potential when compared with the unavailing 721 g of TNT in the Town-class. The fire rate is very good, 12 rounds/min. Once the ready-ammo rack is used, the fire rate is reduced to a still very useful 10 rounds/min.

Now, any small boat will often sink into hull break due to the strong blast force. It is actually possible to dispose of a small patrol boat with a single shot per turret. Hence 4 patrol boats can be destroyed in quick succession by the 4 main cannons due to the rapid-fire and the powerful explosive mass. They also hold the ability of dual-purpose guns, this expands the value against not only naval threats but aerial threats.

The CPXVII turret mounting limited the elevation of the 4.7 inch/45 Mk.XII cannon up to 40°.

The guns provide reasonable elevation angles (40°), which are not 90° but achieve the purpose of fighting against enemy aircraft. It was deemed acceptable during WWII since the intention was to engage an enemy aircraft attacking another member of the fleet, the destroyers acting as an anti-air screen for the battlefleet during air raids.

The trouble of the armament is about the mounting itself, the CPXVII. These turret mountings are really slow on the horizontal traverse, only 7.0°/s. This difficult slow traverse is very noticeable if the ship is halted. It affects the ability to quickly retaliate fire to any ship encountered in a new untargeted direction.

Any destroyer with the same level of mobility and with faster turret traverse will have an advantage over HMS Grafton, like the German destroyers Z15 Erich Steinbrinck or T22.

The 4.7 inch/45 Mk.XII (120 mm) can use 4 types of ammunition:

• 4.7 inch HE Mk.VIIA
• 4.7 inch SAP Mk.VA
• 4.7 inch HE-TF Mk.VIIA
• 4.7 inch HE-VT Mk.VIIA

The recommended shell to engage other destroyers is HE Mk.VIIA.

Penetration statistics
Ammunition	Type of warhead	Penetration @ 0° Angle of Attack (mm)
		1,000 m	2,500 m	5,000 m	7,500 m	10,000 m	15,000 m
HE Mk.VIIA	HE	35	35	35	35	35	35
SAP Mk.VA	SAP	116	92	63	44	33	29
HE-TF Mk.VIIA	HE-TF	35	35	35	35	35	35
HE-VT Mk.VIIA	HE-VT	35	35	35	35	35	35

Shell details
Ammunition	Type of warhead	Velocity (m/s)	Projectile mass (kg)	Fuse delay (s)	Fuse sensitivity (mm)	Explosive mass (TNT equivalent) (g)	Ricochet
							0%	50%	100%
HE Mk.VIIA	HE	808	22.68	0	0.1	3,000	79°	80°	81°
SAP Mk.VA	SAP	808	22.68	0.015	5	900	47°	60°	65°
HE-TF Mk.VIIA	HE-TF	808	22.68	0	0.1	3,000	79°	80°	81°

Proximity-fused shell details
Ammunition	Type of warhead	Velocity (m/s)	Projectile mass (kg)	Fuse delay (m)	Fuse sensitivity (mm)	Arming distance (m)	Trigger radius (m)	Explosive mass (TNT equivalent) (g)	Ricochet
									0%	50%	100%
HE-VT Mk.VIIA	HE-VT	808	22.68	0	0.1	244	23	3,000	79°	80°	81°

Secondary armament

2 х Turret4 x 12.7 mm Vickers Mk.V machine gun

Ammunition8000 rounds

Belt capacity200 rounds

Fire rate600 shots/min

The 12.7 mm Vickers Mk.V turrets are present in HMS Grafton on an anti-air role.

The range in which the AI gunners start to open fire is below 2,000 m. The player must remember this range since the guns will start to open fire often too late to perform manoeuvres against low-level bombers or torpedo attackers.

The Vickers mountings are placed amidships, one in starboard and one in port. They have really good elevations angles of 75° which generally allow them to overlap their range to fire together against a target. The intended purpose of these guns is to provide an obstacle to enemy aviation, but their use is limited to close ranges, often too close. The Vickers also lack the stopping power of autocannons to successfully down all-metal planes. Armoured attackers will also be a significant concern to the heavy machine guns.

The 2 turrets of 4 Vickers Mk.V heavy machine guns offer really good damage against any patrol boat. This is notable on other vehicles such as the MGB-61 in the coastal fleet, that uses the Vickers as the main armament. Grafton can engage any patrol boat with them, however, the 120 mm cannons remain the first choice because of the hull-break capacities.

Additional armament

Setup 18 x 533 mm Mk.VIII torpedo

Setup 22 x Y-gun Mk.VII depth charge

Setup 38 x 533 mm Mk.VIII torpedo

2 x Y-gun Mk.VII depth charge

HMS Grafton can carry 8 x 533 mm Mk.VIII torpedoes.

Both torpedo tubes offer rather limited firing arcs.

The torpedoes possess a very good explosive mass of 327 kg of TNT, and one hit is often lethal enough to sink any destroyer. The range, however, is not great, only 4.57 km. It can be increased at the expense of speed with the installation of the torpedo mode modification, reaching 6.40 km. This installation should be based on the tactics and preferences of the player.

Some players consider is appropriate to install this modification and release the torpedoes early on to maybe hit and sink some ship. While other players value the speed of the torpedoes, and rather close encounters with the target to then engage with an inevitable torrent of torpedoes. The benefit and drawbacks of this lay on the type of map and mode encountered. For the Grafton, the recommended torpedo playstyle is with the torpedo mode on, this will allow to release the torpedo from very far away and safe distances to then manoeuvre for a covered position. This also helps to conserve the ship from more lethal enemies with even greater survivability in close engagements.

The torpedo tubes own a problem that must be noted, they have poor targeting angles. The aft torpedo tube is limited in firing angle by the depth charges guns, while the forward torpedo tube is limited by tows and emergency boats. Grafton must be almost completely horizontal to the targeted direction to release all the torpedoes from broadside. So steering to port or starboard is a common process of the torpedoing. This will make very vulnerable the Grafton as it shows the entire length to the enemy; so players should plan their strategy once all of this is understood- Is worth to know since the torpedoes play a striking role in the armament of latter British destroyers.

Grafton carries 2 Y-gun Mk.VII depth charge guns, located near the aft, one on starboard side and one on port side.

Historically, the depth charges allowed the Grafton to fend off submarines. However, as these vessels are not in-game, the depth charges are a very situational weapon, as they can sometimes be used to great effect against patrol boats attempting to get really close to the Grafton.

They are reloaded very quickly, so they can be constantly dropped to protect the Grafton against patrol boats in a backwards retreat with the visual cover of smoke discharges.

Usage in battles

HMS Grafton brings new standards to the destroyers in terms of firepower and mobility. But it remains a very soft target against enemies on a higher battle rating. This leads to the Grafton serving as a fast light support destroyer with a powerful punch. So the gameplay from the former Escort destroyer, the HMS Churchill, does not vary as much.

It should be played always on the move using the great mobility to keep her untouched, near allies or behind them. Grafton might survive duels with other destroyers thanks to the powerful guns but the crew and the ship will suffer. Therefore the best chances are to strike first and remain safe while moving or hiding far away in the back of the map.

Open maps will bring a vast sea to cruise with the G class. Don't hesitate in using the smoke screens to protect allies and the destroyer. But is advisable to use the mobility to get to safer areas near the shore or behind the main combat fleet. The small boats in those shore areas will fall prey of the Grafton.

Auxiliary Destroyer role

With the great long-range gunnery abilities of the main cannons, the destroyer can be used to provide anti-air cover. The proximity fuze HE-VT Mk.VIIA is useful when the player is manually controlling the turrets as anti-air; the player can see how well- or bad, his shots are leading to the target. Players can also let the AI-controlled gunners fire, but a highly trained crew is required for the best efficiency.

The Vickers Mk.V are valuable when an aircraft starts to close in with the Grafton. But might not be enough to stop the aircraft on time.

If HMS Grafton is soon to be attacked, players can perform the following defensive manoeuvre:

1. Once an enemy attacker approach is reported by the team or the ship's observers, perform a U-turn until the ship is sailing oppositely to the current attacker direction.
2. Release the smokescreen to hide the location from the attacker and to increase the chances of making the aircraft miss the attack.
3. Order the gunners to open fire or to cease fire, depending on how many allied ships and enemies are involved. (If open fire is ordered, the enemy plane might locate the ship behind the smoke. If the open fire is not ordered, the plane might fly past the smoke cover and bomb the ship)
4. Continue the manoeuvres until the enemy plane has been destroyed or proceed to leave to combat zone using more smoke cover.

Performing this manoeuvre in a battle group increases the probabilities of survival, squad up!

Enemies worth nothing

Imperial Japanese Navy - IJN ▅

IJN Ayanami: This destroyer is in the same rank as HMS Grafton, but she holds almost double the crew complement, exactly 221 crew members. This increases her survivability and decreases the chances for Grafton. The best chance is to strike first, fire concisely enough to reduce her crew into even number or to sink the ship once for all. Torpedoes will do quick work of her but cannons are more reliable and immediate. Stay away and try to not let her notice and engage the G-class.

• Japanese destroyers carry numerous lethal torpedoes. However, such torpedoes are also very fragile; target them when possible, as they act as an easy exposed ammo rack when not launched.

German Navy - Kriegsmarine ▀

K2: This destroyer is heavily armoured and may resist many HE shots, so SAP shells should also be fired at this ship in key locations. Thus her crew will start to decrease drastically - HMS Grafton once again must fire first, the K-2's guns are very lethal and can sink the Grafton in scant seconds. Target her critical areas as the big boxy turrets, the engines or bridge to cripple the firepower and mobility, and proceed to finish her off with the Grafton's superior fire rate. She is also really slow so do not hesitate to avoid the ship and manoeuvre for a better gun solution, or even torpedo attack her.

• Aside from this ship, German destroyers in rank I are highly mobile. Be alert for their flanking manoeuvres.

Pros and cons

Pros:

• Powerful main armaments of 4 x 120 mm guns, with a great explosive mass of 3 kg ballistics and fire rate
• Useful mobility and adequate turning time; great on Arcade mode
• 8 x torpedoes are useful for area saturation
• Diversity of shells for the main guns (HE, SAP, HE-TF, HE-VT)
• Dual purpose main cannons; can perform as anti-air
• Improved speed and armament when compared with reserve HMS Churchill

Cons:

• Poor crew size; captains couldn't realize how fast it decreases against ships with 300 or 200 crew members
• Absence of auxiliary armament of any sort
• Only 2 turrets with Vickers Mk.V anti-air machine guns; also deficient due to short-range (less than 2,000 m)
• Non-existent protection of the ammo ready and main racks; they can be easily detonated
• Reduced numbers of depth charges guns; no guns in the stern of the ship
• Modest ammo count of the main guns is easily expended

History

HMS Grafton was laid down in August 1934 as the fifth ship of nine G-class destroyers being built by British dockyards in the interwar years. Almost two years later, in March 1936, the ship was completed and joined the ranks of the Royal Navy.

HMS Grafton spent her early service days as part of the 1st Destroyer Flotilla operating in the Mediterranean. During the Spanish Civil War, HMS Grafton assisted in enforcing the non-intervention policy alongside warships of other nations.

During the outbreak of WW2 in September 1939, HMS Grafton was undergoing refits at Malta, being called back to British waters in the following October. In early 1940, Grafton underwent minor overhaul work before being assigned to escort convoys headed for Norway.

At the same time, the war situation in France was looking desperate with the start of the Siege of Calais. Operation Dynamo, the allied effort of evacuating cut-off troops from Dunkirk, commenced shortly after. HMS Grafton answered the call and assisted with evacuating troops from the 27th, May 1940.

Two days later, however, HMS Grafton spotted survivors of the previously sunk destroyer HMS Wakeful and stopped to commence rescue efforts. Stationary, Grafton presented herself as easy prey for any attacker. Soon enough, she found herself in the crosshairs of the German submarine U-62.

Although severely damaged by the torpedo attack, HMS Grafton stayed afloat long enough for her survivors to be rescued by the destroyer HMS Ivanhoe. Realizing the extent of her damage, the decision was made to scuttle HMS Grafton by gunfire from Ivanhoe. After the shelling, HMS Grafton quickly sank to the bottom, marking the end of her service life and contribution to WW2.

- From Devblog

Media

Skins

• Skins and camouflages for the HMS Grafton from live.warthunder.com.

Images

• 

  Fully elevated Vickers Mk.V turrets

See also

Related development

• ORP Garland

Shared operational history

• HMS Arethusa

Analogues of other nations

• USS Barker (United States)
• Leopard (Germany)
• Frunze (USRR)
• RN Dardo (Italy)

External links

• [Devblog] HMS Grafton (H89): The spirit of self-sacrifice
• The Royal Navy, 1930-2000: innovation and defence, p19-41:, Pugh, Harding, editor, (2004)
• British Destroyers, March, (1967) p.401.
• [Wikipedia] HMS Grafton (H89)

John I. Thornycroft & Company
Destroyers
G-class	HMS Grafton
Tribal-class	HMS Mohawk
N-class	HMAS Nepal
Hunt-class Type IV	HMS Brissenden